Westerbeke W 27

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For over 75 years, Westerbeke has been offering durable and reliable power solutions to meet the challenges of commercial and recreational marine applications. We manufacture diesel and gasoline fueled generators, diesel propulsion engines, climate control systems and specialized sound enclosures.

Our products offer quiet operation, low vibration, long service life and superb value. And our track record for delivering industry-changing innovations has resulted in important advances in safety, as well as beneficial reductions in size, weight, noise, fuel consumption and exhaust emissions for both generators and propulsion engines.

Today, Westerbeke is recognized worldwide for the quality of our products — and for the outstanding service and warranty support we provide through a network of Master Distributors and dealers, covering every ocean and sea plus all the temperate continents.

More from Westerbeke: www.westerbeke.com/pages/about.htm

ΞPIXΞ

History

In 1937, John H. Westerbeke Sr. founded the Westerbeke Corporation as a company dedicated to the development of diesel engines and generators for a variety of uses. By 1938, Westerbeke was already pioneering use of the Detroit Diesel 6-71 for marine applications.

In 1959, the company started customizing Perkins engine blocks for marine applications, creating a market for small marine diesels among sailboaters seeking reliable and practical auxiliary power. The same engines were also used in marine diesel generators. In the 1980’s the company revolutionized the marine diesel market by introducing a new line of quiet, compact, lightweight and dependable generators that were the smallest available. In 2005, Westerbeke offered the first low carbon monoxide (Low-CO) gasoline generator for the marine market.

Currently, Westerbeke uses engines from several leading manufacturers to create marine-proven diesel and gasoline engines ranging from 12 to 66 horsepower, and generators ranging from 3.5 to 33.0 kilowatts. We also manufacture Universal diesel engines from 20 to 26 horsepower, and Rotary Aire marine climate control systems that offer self-contained efficiency in 10,000 BTU and 17,000 BTU models.

More from Westerbeke: www.westerbeke.com/pages/history.htm

More about Universal Motor Co.

ΞPIXΞ

General

+

Specifications For Westerbeke
4-Stroke Cycle Diesel Marine Engines
(by Ascending Horsepower)

TABLE KEY: (Table still under development)
DS = Data Source: (such as Webpages, DataSheets or SpecSheets, Catalogs, Manuals,+) with Links
^  __ = Source wLink, W… = Westerbeke, Ww = Westerbeke Webpage, Ws = Westerbeke SpecSheet
^  BD = BoatDiesel.com = …B, …d = Directory, …w = Webpage, …s = SpecSheet, …c = Catalog/Brochure,
^   …o = Operator’s Manual, …m = Service/Technical Manual, …1,2,3,A,B,C,etc = Source #, Version, Revision
⊗ = Data Not Available from Data Source, ? = …? = Data Not Confirmed
CYL = Cylinder Configuration-Number−Liner: I = In-Line, U = u… = Upright (Vertical)
^  Liner: W = Wet Liner(s), D = Dry Liner(s), WD = Combo Wet + Dry Liner(s),
^  ^  P = Parent/Native Bore (Determined from Service Manual & Parts List, S = Sleeved (Press fit?)
^  …mm = Millimeters, …in = Inches, …cc = Cubic Centimeters, …L = Litres (Liters), …ci = Cubic Inches
♣ = Base Engine Manufacturer, ♣ = Engine Mariniser (Marinizer)
MODEL: EC = Engine Code
RATING: See Engine Duty Ratings at end of this table.
ASP: N = Naturally Aspirated, T = Turbocharged, S = Supercharged
^  Ta = Turbocharged & Aftercooled, Ti = Turbocharged and Intercooled
^  …S = …s = w/Seawater Intercooler, …R = …r = w/Raw Water Intercooler
^  -INJ: M = Mechanical Injection, i = Integral Injector, Cr = Common Rail, E = Electronic Injection
KW = Kilowatts, HP = Horsepower, BHP = Brake Horsepower, MHP = Metric Horsepower
@RPM = Power Ratings @ Revolutions Per Minute
YEARS MFR’D: Beginning-Ending, Trailing  “–”  (Dash) without an Ending Date = Still in Production.
^  Data from Westerbeke Propulsion Model History (12/8/05) updated from Westerbeke Website.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww U-1−⊗ ⊗mm ⊗mm 3.00in 2.25in ⊗L / 15.90ci
Base Engine Ws U-1−⊗ ⊗mm ⊗mm 3in 2.25in ⊗L / 15.9ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
DS 5 − ⊗ Wd N ⊗ 5 ⊗ 3000 1972?-1976?
DS 5 − Con Ws N ⊗ 5 ⊗ 3000 1972?-1976?

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww U-1−⊗ ⊗mm ⊗mm 3.23in 2.17in ⊗L / 17.68ci
Base Engine Ws U-1−⊗ 82mm 55mm 3.23in 2.17in 0.29L / 17.68ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ ?-?
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
7A One − ⊗ Wd N ⊗ 6.4 ⊗ 3000 2000-2003
7A One − ⊗ Ws N 4.7 6.4 ⊗ 3000 2000-2003

NOTES: Westerbeke Webpage. SpecSheet. OpManual. Parts Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww U-1−⊗ ⊗mm ⊗mm 3in 2 5/8in ⊗cc / 18.5ci
Base Engine Ws U-1−⊗ ⊗mm ⊗mm 3in 2 5/8in 303cc / 18.5ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W7 − ⊗ Wd N ⊗ 7 ⊗ 3600 1976-1984
W7 − Con Ws N ⊗ 7 ⊗ 3600 1976-1984

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww U-1−⊗ ⊗mm ⊗mm 3in 2 5/8in ⊗cc / 18.5ci
Base Engine Ws U-1−⊗ ⊗mm ⊗mm 3in 2 5/8in 303cc / 18.5ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
DS 7 − ⊗ Wd N ⊗ 7 ⊗ 3600 1976-1984
DS 7 − Con Ws N ⊗ 7 ⊗ 3600 1976-1984

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww‚Ws uI-2−⊗ ⊗mm ⊗mm 2.56in 2.68in ⊗L / 27.52ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 10 Two − ⊗ Wd N ⊗ 10 ⊗ 3600 1983-1987
W 10 Two − Con Ws N ⊗ 9 ⊗ 3600 1983-1987
W 10 Two − Int Ws N ⊗ 9.6 ⊗ 3600 1983-1987
W 10 Two − Max Ws N ⊗ 10 ⊗ 3600 1983-1987

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww U-1−⊗ ⊗mm ⊗mm 3.34in 3.34in ⊗L / 29.4ci
Base Engine Ws U-1−⊗ ⊗mm ⊗mm 3.35in 3.35in ⊗L / 29.4ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 10 − ⊗ Wd N ⊗ 10 ⊗ 3000 19??-19??
W 10 − Con Ws N ⊗ 10 ⊗ 3000 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Formerly Pilot-10

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww U-1−⊗ ⊗mm ⊗mm 3.74in 2.91in ⊗L / 32.00ci
Base Engine Ws U-1−⊗ 95mm 74mm 3.74in 2.91in 0.524L / 31.95ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ ?-?
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
11A One − ⊗ Wd N ⊗ 11 ⊗ 3000 2001-20??
11A One − ⊗ Ws N 8 10.7 ⊗ 3000 2001-20??

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Installation Drawing 44923. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-2−⊗ ⊗mm ⊗mm 2.56in 2.68in ⊗L / 27.52ci
Base Engine Ws uI-2−⊗ 65mm 68mm 2.56in 2.68in 0.45L / 27.52ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
12B Two − ⊗ Wd N ⊗ 12 ⊗ 3000 1983-1992
12B Two − ⊗ Ws N ⊗ 12 ⊗ 3600 1983-1992

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Technical Manual. Wiring Diagram rev K. Wiring Diagram rev L. Wiring Diagram rev M. Wiring Diagram rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-2−⊗ ⊗mm ⊗mm 2.99in 2.76in ⊗L / 38.80ci
Base Engine Ws uI-2−⊗ 76mm 70mm 2.99in 2.76in 0.63L / 38.75ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-?
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
12C Two − ⊗ Wd‚Ws N ⊗ 12 ⊗ 3000 1992-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Bulletin 2010-2: Piston Wrist Pin Size Change 6/11/2010. Service Manual. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Wc uI-2−⊗ ⊗mm ⊗mm ⊗in ⊗in 0.63L / 39ci
Base Engine Ww uI-2−⊗ ⊗mm ⊗mm 2.99in 2.76in ⊗L / 38.75ci
Base Engine Ws uI-2−⊗ 76mm 70mm 2.99in 2.76in 0.63L / 38.75ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
12D Two − ⊗ Wc N 9.0 12 ⊗ 3000 20??-
12D Two − ⊗ Wd N ⊗ 12 ⊗ 3000 20??-
12D Two − ⊗ Ws N 9.0 12 ⊗ 3000 20??-

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Bulletin 2010-2: Piston Wrist Pin Size Change 6/11/2010. Service Manual. Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-2−⊗ ⊗mm ⊗mm 2.68in 3.07in ⊗L / 37.00ci
Base Engine Ws uI-2−⊗ 68mm 78mm 2.68in 3.07in 0.566L / 37ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 13 − ⊗ Wd N ⊗ 13 ⊗ 3000 1980-1984
W 13 − ⊗ Ws N ⊗ 13.5 ⊗ 3000 1980-1984

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-2−⊗ ⊗mm ⊗mm 2.68in 3.07in ⊗L / 37.00ci
Base Engine Ws uI-2−⊗ 68mm 78mm 2.68in 3.07in 0.566L / 37ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 13A − ⊗ Wd N ⊗ 13 ⊗ 3000 1984-1988
W 13A − ⊗ Ws N ⊗ 13.5 ⊗ 3000 1984-1988

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww‚Ws uI-2−⊗ ⊗mm ⊗mm 3.15in 3.15in ⊗L / 50ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Pilot 50 − ⊗ Wd N ⊗ 15 ⊗ 2800 19??-19??
Pilot 50 − Con Ws N ⊗ 12 ⊗ 2400 19??-19??
Pilot 50 − Max Ws N ⊗ 15 ⊗ 2800 19??-19??

NOTES: Westerbeke Webpage. SpecSheet.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 2.478in 3.50in ⊗L / 58.00ci
Base Engine Ws uI-4−⊗ ⊗mm ⊗mm 2.478in 3.5in ⊗L / 58ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-60 − ⊗ Wd N ⊗ 15 ⊗ 2500 1971-1979
4-60 − ⊗ Ws N ⊗ 15 ⊗ 2500 1971-1979

NOTES: Westerbeke Webpage. SpecSheet. Technical Manual & Parts List.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-2−⊗ ⊗mm ⊗mm 2.99in 2.76in ⊗L / 38.75ci
Base Engine Ws uI-2−⊗ 76mm 70mm 2.99in 2.76in 0.63L / 38.75ci
Base Engine Wo‚m uI-2−⊗ 76mm 70mm 2.99in 2.76in 0.635L / 38.75ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
20B Two − ⊗ Wd N ⊗ 18 ⊗ 3600 1987-20??
20B Two − ⊗ Ws N 13.4 18 ⊗ 3600 1987-20??
20B Two − Max Wo‚m N ⊗ 18 ⊗ 3600 1987-20??

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 2.40in 3.05in ⊗L / 48.00ci
Base Engine Ws uI-3−⊗ 65mm 78mm 2.4in 3.05in 0.78L / 48ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 18 − ⊗ Wd N ⊗ 18 ⊗ 3300 1985-1989
W 18 − ⊗ Ws N ⊗ 18 ⊗ 3300 1985-1989

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww‚Ws uI-2−⊗ ⊗mm ?mm 3.35in 3.35in ⊗L / 58.8ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 20 − ⊗ Wd N ⊗ 20 ⊗ 3000 19??-19??
W 20 − ⊗ Ws N ⊗ 20 ⊗ 3000 19??-19??

NOTES: Westerbeke Webpage. SpecSheet.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 2.87in 3.07in ⊗L / 60.00ci
Base Engine Ws uI-3−⊗ 73mm 78mm 2.87in 3.07in 0.98L / 60ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 21 − ⊗ Wd N ⊗ 21 ⊗ 3000 1980-1984
W 21 − ⊗ Ws N ⊗ 22? ⊗ 3000 1980-1984

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 2.87in 3.07in ⊗L / 60.00ci
Base Engine Ws uI-3−⊗ 73mm 78mm 2.87in 3.07in 0.98L / 60ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 21A − ⊗ Wd N ⊗ 21 ⊗ 3000 1984-1987
W 21A − ⊗ Ws N ⊗ 22 ⊗ 3000 1984-1987

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.19in 3.06in ⊗L / 97.60ci
Base Engine Ws uI-4−⊗ 81mm 77.6mm 3.189in 3.055in ⊗L / 97.6ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
L-25 − ⊗ Wd N ⊗ 22 ⊗ 2400 1975-1978
L-25 − ⊗ Ws N ⊗ 22 ⊗ 2400 1975-1978

NOTES: Westerbeke Webpage. SpecSheet. Technical Manual & Parts List.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 2.87in 3.07in ⊗L / 60.00ci
Base Engine Ws uI-3−⊗ 73mm 78mm 2.87in 3.07in 0.98L / 60ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
RD 60 − ⊗ Wd N ⊗ 22 ⊗ 3000 19??-19??
RD 60 − ⊗ Ws N ⊗ 22 ⊗ 3000 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
British Leyland 4-91 Ww uI-4−⊗ ⊗mm ⊗mm 2.80in 3.5in ⊗L / 91.00ci
British Leyland 4-91 Ws uI-4−⊗ ⊗mm ⊗mm 2 7/8in 3½in ⊗L / 91ci
♣  BRITISH LEYLAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣?  PERKINS?
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 1969-1975

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List (from L-36). Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
British Leyland 4-91 Ww uI-4−⊗ ⊗mm ⊗mm 2.80in 3.5in ⊗L / 91.00ci
British Leyland 4-91 Ws uI-4−⊗ ⊗mm ⊗mm 2 7/8in 3½in ⊗L / 91ci
♣  BRITISH LEYLAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣?  PERKINS?
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 30 − ⊗ Wd N ⊗ 25 ⊗ 2500 1975-1981
W 30 − ⊗ Ws N ⊗ 25 ⊗ 2500 1975-1981

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Technical Manual. Formerly 4-91.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Wc uI-3−⊗ ⊗mm ⊗mm ⊗in ⊗in 0.95L / 58ci
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 2.99in 2.76in 0.95L / 58.09ci
Base Engine Ws uI-3−⊗ 76mm 70mm 2.99in 2.76in 0.95L / 58.09ci
Base Engine Wo uI-3−⊗ 76mm 70mm 2.99in 2.76in 0.952L / 59.09ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
30C Three − ⊗ Wc N 18.7 25 ⊗ 3600 20??-
30C Three − ⊗ Wd N ⊗ 25 ⊗ 3600 20??-
30C Three − ⊗ Ws N 18.7 25 ⊗ 3600 20??-
30C Three − Max Wo N ⊗ 25 ⊗ 3600 20??-

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Technical Manual. Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 2.87in 3.07in ⊗L / 80.00ci
Base Engine Ws uI-4−⊗ 73mm 78mm 2.87in 3.07in 1.3L / 80ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 27 − ⊗ Wd N ⊗ 27 ⊗ 3000 1980-1984
W 27 − ⊗ Ws N ⊗ 30 ⊗ 3000 1980-1984

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 2.99in 2.76in 0.95L / 58.09ci
Base Engine Ws uI-3−⊗ 76mm 70mm 2.99in 2.76in 0.95L / 58.09ci
Base Engine Wo‚m uI-3−⊗ 76mm 70mm 2.99in 2.76in 0.952L / 59.09ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
30B Three − ⊗ Wd N ⊗ 27 ⊗ 3600 1987-20??
30B Three − ⊗ Ws N 20 27 ⊗ 3600 1987-20??
30B Three − Max Wo‚m N ⊗ 27 ⊗ 3600 1987-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Wc uI-3−⊗ ⊗mm ⊗mm ⊗in ⊗in 1.32L / 80ci
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 3.07in 3.62in ⊗L / 80.43ci
Base Engine Ws uI-3−⊗ 78mm 92mm 3.07in 3.62in 1.318L / 80.43ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
35E Three − ⊗ Wc N 20.9 28 ⊗ 3000 20??-
35E Three − ⊗ Wd N ⊗ 28 ⊗ 3000 20??-
35E Three − ⊗ Ws N 20.9 28 ⊗ 3000 20??-

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 3.07in 3.62in ⊗L / 80.43ci
Base Engine Ws uI-3−⊗ 78mm 92mm 3.07in 3.62in 1.318L / 80.42ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
35C Three − ⊗ Wd N ⊗ 29 ⊗ 3600 2000-2002
35C Three − ⊗ Ws N ⊗ 29 ⊗ 3600 2000-2002

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Callout Drawing (7/6/10). Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 2.87in 3.07in 80.00ci
Base Engine Ws uI-4−⊗ 73mm 78mm 2.87in 3.07in 1.3L / 80ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 27A − ⊗ Wd N ⊗ 30 ⊗ 3000 1984-1988
W 27A − Con Ws N ⊗ 32? ⊗ 3000 1984-1988
W 27A − Int Ws N ⊗ 30 ⊗ 3000 1984-1988
W 27A − Max Ws N ⊗ 27? ⊗ 3000 1984-1988

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 2.87in 3.07in ⊗L / 60.00*ci
Base Engine Ws uI-4−⊗ 73mm 78mm 2.87in 3.07in 1.3L / 80ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
RD 80 − ⊗ Wd N ⊗ 30 ⊗ 3000 19??-19??
RD 80 − ⊗ Ws N ⊗ 30 ⊗ 3000 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Service Manual. *60.00ci Displacement appears to be an error, should read 80.00ci. 3 cyliner RD 60 is 60.00ci.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.07in 3.07in ⊗L / 91.00ci
Base Engine Ws uI-4−⊗ 78mm 78mm 3.07in 3.07in 1.490L / 91ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 33A − ⊗ Wd N ⊗ 31 ⊗ 3000 1984-1988
W 33A − Usable Ws N ⊗ 21 ⊗ 2000 1984-1988
W 33A − Con Ws N ⊗ 28* ⊗ 3000 1984-1988
W 33A − Usable Ws N ⊗ 31 ⊗ 3000 1984-1988
W 33A − Int Ws N ⊗ 32* ⊗ 3000 1984-1988
W 33A − Max Ws N ⊗ 33 ⊗ 3000 1984-1988

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. *BHP from SpecSheet Performance Curve.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−P ⊗mm ⊗mm 3.07in 3.62in ⊗L / 80.43ci
Base Engine Ws uI-3−P 78mm 92mm 3.07in 3.62in 1..318L / 80.43ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
35D Three − ⊗ Wd N ⊗ 31 ⊗ 3000 2002-20??
35D Three − ⊗ Ws N 23 31 ⊗ 3000 2002-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Callout Drawing 54700. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−P ⊗mm ⊗mm 3.07in 3.07in ⊗L / 68.20ci
Base Engine Ws uI-3−P 78mm 78mm 3.07in 3.07in 1.118L / 68.23ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
35B Three − ⊗ Wd N ⊗ 32 ⊗ 3600 1987-2000
35B Three − ⊗ Ws N 23.8 32 ⊗ 3600 1987-2000

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−P ⊗mm ⊗mm 3.07in 3.07in ⊗L / 91.00ci
Base Engine Ws uI-4−P 78mm 78mm 3.07in 3.07in 1.490L / 91.00ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 33 − ⊗ Wd N ⊗ 33 ⊗ 3000 1980-1984
W 33 − Con Ws N ⊗ 28* ⊗ 3000 1980-1984
W 33 − Int Ws N ⊗ 32* ⊗ 3000 1980-1984
W 33 − Max Ws N ⊗ 33 ⊗ 3000 1980-1984

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. *BHP from SpecSheet Performance Curve.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ds uI-?−⊗ ⊗mm ⊗mm ?in ?in ?L / ?ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
LB49 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
British Leyland 4-91 Ww uI-4−⊗ ⊗mm ⊗mm 2.80in 3.5in ⊗L / 91.00ci
British Leyland 4-91 Ws uI-4−⊗ ⊗mm ⊗mm 2 7/8in 3½in ⊗L / 91ci
♣  BRITISH LEYLAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣?  PERKINS?
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-91 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 1969-1975

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List (from L-36). Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Perkins 4.99 Ww uI-4−W ⊗mm ⊗mm 3.00in 3.50in ⊗L / 99.00ci
Perkins 4.99 Ws uI-4−W ⊗mm ⊗mm 3.00in 3.50in ⊗L / 99ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.99 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-99 − ? Wd N ? 34 ? 3000 1960-1963
4-99 − Con Ws N ? 33 ? 3000 1960-1963
4-99 − Int Ws N ? 40 ? 3600 1960-1963

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−P ⊗mm ⊗mm 2.87in 3.07in ⊗L / 79.64ci
Base Engine Ws uI-4−P 73mm 78mm 2.87in 3.07in 1.305L / 79.64ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
38B Four − ⊗ Wd N ⊗ 37 ⊗ 3600 1987-2001
38B Four − ⊗ Ws N ⊗ 37 ⊗ 3600 1987-2001

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Technical Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Wc uI-4−⊗ ⊗mm ⊗mm ⊗in ⊗in 1.76L / 107ci
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.07in 3.62in ⊗L / 107.27ci
Base Engine Ws uI-4−⊗ 78mm 92mm 3.07in 3.62in 1.758L / 107.27ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
44C Four − ⊗ Wc N 28.3 38 ⊗ 3000 20??-
44C Four − ⊗ Wd N ⊗ 38 ⊗ 3000 20??-
44C Four − ⊗ Ws N 28.3 38 ⊗ 3000 20??-

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Callout Drawing 54694 (7/6/20). Service Manual. Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−D ⊗mm ⊗mm 3.13in 3.50in ⊗L / 107.00ci
Perkins 4.108 Ws uI-4−D ⊗mm ⊗mm 3.125in 3.50in ⊗L / 107.00ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.108 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 40A − ⊗ Wd N ⊗ 37 ⊗ 3000 1978?-1990?
W 40A − ⊗ Ws N ⊗ 37 ⊗ 3000 1978?-1990?

NOTES: Westerbeke Webpage. SpecSheet.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Perkins 4.? Ww uI-4−W?‚D? ⊗mm ⊗mm 3.13in 3.50in ⊗L / 107.00ci
Perkins 4.107? Ws uI-4−W 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
Perkins 4.108? Ws uI-4−D 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
Perkins 4.99 Wm uI-4−W 76.2mm 88.9mm 3.00in 3.50in 1.621L / 99.00ci
Perkins 4.107 Wm uI-4−W 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
Perkins 4.108 Wm uI-4−D 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.99 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
4.107 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
4.108 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 40 − ⊗ Wd N ⊗ 37 ⊗ 3000 1978-1990
W 40 − Con Ws N ⊗ 37 ⊗ 3000 1978-1990
W 40 − Max Ws N ⊗ 40 ⊗ 3000 1978-1990

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Wm uI-4−⊗ 79.37mm 88.90mm 3.125in 3.5in 1.760L / 107.4ci
Perkins 4.107? Wm? uI-4−W 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
Perkins 4.108? Wm? uI-4−D 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.107? 8? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
40NA − ⊗ Wm N ⊗ 37 ⊗ 3000 1985-1990

NOTES: Data from OpManual.
NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.07in 3.62in ⊗L / 107.27ci
Base Engine Ws uI-4−⊗ 78mm 92mm 3.07in 3.62in 1.758L / 107.27ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
44A Four − ⊗ Wd N ⊗ 40 ⊗ 3600 1999-2002
44A Four − ⊗ Ws N 29 40 ⊗ 3600 1999-2002

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Callout Drawing 54694. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ds uI-?−? ?mm ?mm ?in ?in ?L / ?ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.107 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
14088B Navy − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Perkins 4.107 Ww uI-4−W ⊗mm ⊗mm 3.13in 3.50in ⊗L / 107.00ci
Perkins 4.107 Ws uI-4−W ⊗mm ⊗mm 3.13in 3.50in ⊗L / 107.00ci
Perkins 4.107 Wm uI-4−W 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.107 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-107 − ⊗ Ww N ⊗ 40 ⊗ 3000 1963-1975
4-107 − Con Ws N ⊗ 36* ⊗ 3000 1963-1975
4-107 − ⊗ Ws N ⊗ 40 ⊗ 3000 1963-1975
4-107 − NMI Ws N ⊗ 45* ⊗ 3600 1963-1975
4-107 − SPRM Ws N ⊗ 47* ⊗ 4000 1963-1975

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Service Manual. *BHP from SpecSheet Performance Curve.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Perkins 4.108 W? uI-4−⊗ ⊗mm ⊗mm ⊗in ⊗in 1.760L / 108ci
Perkins 4.108 Wm uI-4−D 79.37mm 88.9mm 3.125in 3.5in 1.760L / 107.4ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.108 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-108 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 1975-1978

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−P? ⊗mm ⊗mm 3.16in 3.50in ⊗L / 110.00ci
Base Engine Ws uI-4−P? ⊗mm ⊗mm 3-5/32in 3½in ⊗L / 110ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 50 − ⊗ Wd N ⊗ 41 ⊗ 3200 1977-1979
W 50 − Con Ws N ⊗ 41 ⊗ 3200 1977-1979
W 50 − Max Ws N ⊗ 45* ⊗ 3200 1977-1979

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Technical Manual. *BHP from SpecSheet Performance Curve.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.07in 3.07in ⊗L / 90.93ci
Base Engine Ws uI-4−⊗ 78mm 78mm 3.07in 3.07in 1.49L / 90.93ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
42B Four − ⊗ Wd N ⊗ 42 ⊗ 3600 1987-1999
42B Four − ⊗ Ws N 31.3 42 ⊗ 3600 1987-1999

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Mitsubishi? MVXL01.8? Ww uI-4−⊗ ⊗mm ⊗mm 3.07in 3.62in ?L / 107.27ci
Mitsubishi? MVXL01.8? Ws uI-4−⊗ 78mm 92mm 3.07in 3.62in 1.758L / 107.27ci
♣  MITSUBISHI?
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
MVXL01.8? − ⊗ es N ⊗ 41 ⊗ 3000 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
44B Four − ⊗ Wd N ⊗ 44 ⊗ 3000 2002-20??
44B Four − ⊗ Ws N 32 44 ⊗ 3000 2002-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Callout Drawing 54694 (7/16/10). Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−D ⊗mm ⊗mm 3.30in 3.70in ⊗L / 127.00ci
Base Engine Ws uI-4−D ⊗mm ⊗mm 3.3in 3.7in ⊗L / 128ci
Base Engine Ws uI-4−D 84mm 94⊗mm 3.307in 3.701in 2084cc / 127.1ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 46 − ⊗ Wd N ⊗ 46 ⊗ 3000 1985-1990
W 46 − CRPO Ws N ⊗ 30 ⊗ 2000 1985-1990
W 46 − CRPO Ws N ⊗ 37 ⊗ 2500 1985-1990
W 46 − CRPO Ws N ⊗ 42 ⊗ 3000 1985-1990
W 46 − URPO Ws N ⊗ 34 ⊗ 2000 1985-1990
W 46 − URPO Ws N ⊗ 42 ⊗ 2500 1985-1990
W 46 − URPO Ws N ⊗ 46 ⊗ 3000 1985-1990
W 46 − Max Ws N ⊗ 64 ⊗ 3800 1985-1990

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. Wiring Diagram 033685 Rev B (7/12/12). Wiring Diagram 036467 Rev B (7/12/12).

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Wc uI-4−⊗ ⊗mm ⊗mm ⊗in ⊗in 2.18L / 133ci
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.35in 3.78in ⊗L / 133.00ci
Base Engine Ws uI-4−⊗ 85mm 96mm 3.35in 3.78in 2.18L / 133.0ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
55D Four − ⊗ Wc N 35.9 48 ⊗ 2600 20??-
55D Four − ⊗ Wd N ⊗ 48 ⊗ 2600 20??-
55D Four − ⊗ Ws N 35.9 48 ⊗ 2600 20??-

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List (Parts Callout Drawing). Service Manual. Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.50in 3.51in ?L / 134.80ci
Base Engine Ws uI-4−⊗ ⊗mm ⊗mm 3.50in 3.51in ?L / 134.8ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 52 − ⊗ Wd N ⊗ 52 ⊗ 3000 1981-1990
W 52 − ⊗ Ws N ⊗ 52 ⊗ ⊗ 1981-1990
W 52 − Con Ws N ⊗ 30 ⊗ 2000 1981-1990
W 52 − Con Ws N ⊗ 45 ⊗ 3000 1981-1990
W 52 − Con Ws N ⊗ 56 ⊗ 4000 1981-1990
W 52 − Int Ws N ⊗ 35 ⊗ 2000 1981-1990
W 52 − Int Ws N ⊗ 53 ⊗ 3000 1981-1990
W 52 − Int Ws N ⊗ 66 ⊗ 4000 1981-1990

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Perkins 4.154 Ds uI-4−D ⊗mm ⊗mm ⊗in ⊗in ⊗L / 154ci
Perkins 4.154 Pm uI-4−D 89.9mm 101.6mm 3.5in 4.0in 2.523L / 153.9ci
♣  PERKINS
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4.154 − Con Pm N ⊗ 55 ⊗ 3000 19??-19??
4.154 − Int Pm N ⊗ 70 ⊗ 3600 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-154 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 1972-1977

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Perkins Parts Manual. Service Manual. Technical Manual. Perkins Workshop Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
? 4.154 Ww uI-4−⊗ ⊗mm ⊗mm 3.50in 4.00in ⊗L / 154.20ci
? 4.154 Ws uI-4−⊗ 89mm 101.6mm 3.50in 4.00in ⊗L / 154.20ci
? 4.154 Wm uI-4−⊗ 89mm 101.6mm 3.50in 4.00in 2520cc / 154.2ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 60 − ⊗ Wd N ⊗ 53 ⊗ 2500 1977-1980
W 60 − Con Ws N ⊗ 48 ⊗ 2500 1977-1980
W 60 − Int Ws N ⊗ 53 ⊗ 2500 1977-1980
W 60 − Int Ws N ⊗ 60 ⊗ 3000 1977-1980
W 60 − Con Wm N ⊗ 53 ⊗ 2500 1977-1980
W 60 − Int Wm N ⊗ 60 ⊗ 3000 1977-1980

NOTES: Westerbeke Webpage. SpecSheet. Parts List. Service Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−D ⊗mm ⊗mm 3.38in 3.70in ⊗L / 133.20ci
Base Engine Ws uI-4−D 86.0mm 94.0mm 3.38in 3.70in 2.18L / 133.2ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
55A Four − ⊗ Wd N ⊗ 55 ⊗ 3600 1995-2002
55A Four − ⊗ Ws N 41 55 ⊗ 3600 1995-2002

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.35in 3.78in ⊗L / 133.00ci
Base Engine Ws uI-4−⊗ 85mm 96mm 3.35in 3.78in 2.18L / 133ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
55C Four − ⊗ Wd N ⊗ 55 ⊗ 3000 2005-20??
55C Four − ⊗ Ws N 40 55 ⊗ 3000 2005-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List (Parts Callout Drawing). Service Manual, Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.35in 3.78in ⊗L / 133.20ci
Base Engine Ws uI-4−⊗ 85mm 96mm 3.35in 3.78in 2.18L / 133.2ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
55B Four − ⊗ Wd N ⊗ 55 ⊗ 3000 2002-2005
55B Four − ⊗ Ws N 40 55 ⊗ 3000 2002-2005

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List (Parts Callout Drawing). Service Manual, Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
? 4.154 Ww uI-4−⊗ ⊗mm ⊗mm 3.50in 4.00in ⊗L / 154.00ci
? 4.154 Ws uI-4−⊗ ⊗mm ⊗mm 3.50in 4.00in ⊗L / 154.00ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 58 − ⊗ Wd N ⊗ 58 ⊗ 3000 1981-1991
W 58 − ⊗ Ws N ⊗ 58 ⊗ ⊗ 1981-1991
W 58 − Con Ws N ⊗ 38 ⊗ 2000 1981-1990
W 58 − Con Ws N ⊗ 46.9 ⊗ 2500 1981-1990
W 58 − Con Ws N ⊗ 52.8 ⊗ 3000 1981-1990
W 58 − Int Ws N ⊗ 44.8 ⊗ 2000 1981-1990
W 58 − Int Ws N ⊗ 55.2 ⊗ 2500 1981-1990
W 58 − Int Ws N ⊗ 62 ⊗ 3000 1981-1990
W 58 − ⊗ Ws N ⊗ 69 ⊗ 3600 1981-1990

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.50in 3.51in ⊗L / 134.80ci
Base Engine Ws uI-4−⊗ 88.9mm 89.1mm 3.50in 3.51in 2.21L / 134.8ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
63B Four − ⊗ Wd N ⊗ 63 ⊗ 3600 1990-1994
63B Four − ⊗ Ws N ⊗ 63 ⊗ 3600 1990-1994

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.50in 3.51in ⊗L / 134.80ci
Base Engine Ws uI-4−⊗ 88.9mm 89.1mm 3.50in 3.51in 2.21L / 134.8ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
63C Four − ⊗ Wd N ⊗ 63 ⊗ 3600 1994-2000
63C Four − ⊗ Ws N 47 63 ⊗ 3600 1994-2000

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.60in 3.50in ⊗L / 144.40ci
Base Engine Ws uI-4−⊗ 92mm 89mm 3.6in 3.5in 2.32L / 144.4ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
63D Four − ⊗ Wd N ⊗ 61 ⊗ 4000 2001-2003
63D Four − ⊗ Ws N 46 61 ⊗ 4000 2001-2003

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.74in 4.13in ⊗L / 182.00ci
Base Engine Ws uI-4−⊗ 95mm 105mm 3.74in 4.13in 2.977L / 182.00ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
64A Four − ⊗ Wd N ⊗ 64⊗ 2600 2003-20??
64A Four − ⊗ Ws N 47 64 ⊗ 2600 2003-20??

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts Callout Drawing. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Wc uI-4−⊗ ⊗mm ⊗mm ⊗in ⊗ 3.62L / 221ci
Base Engine Ws uI-4−⊗ 98mm 120mm 3.86in 4.72in 3.62L / 220.90ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
65B Four − ⊗ Wc N 49.2 66 ⊗ 2600 19??-19??
65B Four − ⊗ Wd N ⊗ 66 ⊗ 2600 19??-19??
65B Four − ⊗ Ws N 49.2 66 ⊗ 2600 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing 53998. Operator’s Manual. Parts Callout Drawing. Service Manual. Wiring Diagram Rev M,

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.86in 4.33in ⊗L / 202.50ci
Base Engine Ws uI-4−⊗ 98.0mm 110.0mm 3.86in 4.33in 3.3L / 202.5ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
65A Four − ⊗ Wd N ⊗ 68 ⊗ 2600 19??-19??
65A Four − ⊗ Ws N 50.7 68 ⊗ 2600 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts Callout Drawing (7/29/11). Parts Callout Drawing (6/26/14). Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 95.00*in 105.00*in ⊗L / 182.00ci
Base Engine Ws uI-4−⊗ 95mm 105mm 3.74in 4.13in 2.977L / 182.00ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 70 − ⊗ Wd N ⊗ 70 ⊗ 3000 1982-1991
W 70 − ⊗ Ws N ⊗ 70 ⊗ ⊗ 1982-1991
W 70 − Con Ws N ⊗ 49 ⊗ 2000 1982-1991
W 70 − Con Ws N ⊗ 59 ⊗ 2500 1982-1991
W 70 − Con Ws N ⊗ 62 ⊗ 3000 1982-1991
W 70 − Int Ws N ⊗ 57.5 ⊗ 2000 1982-1991
W 70 − Int Ws N ⊗ 69 ⊗ 2500 1982-1991
W 70 − Int Ws N ⊗ 73 ⊗ 3000 1982-1991
W 70 − Max Ws N ⊗ 78 ⊗ 3800 1982-1991

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
? 4.154 Ww uI-4−⊗ ⊗mm ⊗mm 3.50in 4.00in ⊗L / 154.00ci
? 4.154 Ws uI-4−⊗ 88.9mm 101.6mm 3.50in 4.00in 2.5L / 154.00ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
71B Four − ⊗ Wd N ⊗ 71 ⊗ 3600 1991-1994
71B Four − ⊗ Ws N ⊗ 71 ⊗ 3600 1991-1994

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.50in 4.00in ⊗L / 154.00ci
? 4.154 Ws uI-4−⊗ 88.9mm 101.6mm 3.50in 4.00in 2.5L / 154.0ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
71C Four − ⊗ Wd N ⊗ 71⊗ 3600 1994-20??
71C Four − ⊗ Ws N 52 71 ⊗ 3600 1994-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.86in 4.92in ⊗L / 230.00ci
Base Engine Ws uI-4−⊗ 98mm 125mm 3.86in 4.92in ⊗L / 230.2ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 80 − ⊗ Wd N ⊗ 75 ⊗ 2600 1978-1982
W 80 − ⊗ Ws N ⊗ 75 ⊗ 2600 1978-1982

NOTES: Westerbeke Webpage. SpecSheet. Parts List.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 4.13in 4.92in ⊗L / 262.00ci
Base Engine Ws uI-4−⊗ 105mm 125mm 4.13in 4.92in 4.3L / 262ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Century 80-N4 − ⊗ Wd N ⊗ 80 ⊗ 2500 2001-2004
Century 80-N4 − ⊗ Ws N 59 80 ⊗ 2500 2001-2004

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts Callout Drawing. Service Manual. Wiring Diagram Rev A.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.74in 4.13in ⊗L / 182.00ci
Base Engine Ws uI-4−⊗ 95mm 105mm 3.74in 4.13in 2.977L / 182ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
82B Four − ⊗ Wd N ⊗ 82 ⊗ 3600 1991-20??
82B Four − ⊗ Ws N ⊗ 82 ⊗ 3600 1991-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.94in 4.33in ⊗L / 210.80ci
Base Engine Ws uI-4−⊗ 100.1mm 110mm 3.94in 4.33in 3.5L / 210.8ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
90A Four − ⊗ Wd N ⊗ 90 ⊗ 3600 1999-20??
90A Four − ⊗ Ws N 67 90 ⊗ 3600 1999-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Parts List. Service Manual. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
? Ds uI-4−⊗ ⊗mm ⊗mm ⊗in ⊗in ⊗L / 230ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
4-230 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 1972-1978

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ws uI-6−⊗ ⊗mm ⊗mm 3.62in 4.00in ⊗L / 247.20ci
Base Engine Ws uI-6−⊗ ⊗mm ⊗mm 3.62in 4in 4.0521L / 247.20ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 100 − ⊗ Wd N ⊗ 100 ⊗ 3000 1982-1991
W 100 − ⊗ Ws N ⊗ 100 ⊗ 3000? 1982-1991
W 100 − Con Ws N ⊗ 63.8 ⊗ 2000 1982-1991
W 100 − Con Ws N ⊗ 77 ⊗ 2500 1982-1991
W 100 − Con Ws N ⊗ 87.6 ⊗ 3000 1982-1991
W 100 − Int Ws N ⊗ 75 ⊗ 2000 1982-1991
W 100 − Int Ws N ⊗ 90.5 ⊗ 2500 1982-1991
W 100 − Int Ws N ⊗ 103 ⊗ 3000 1982-1991

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Technical Manual.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ws uI-6−⊗ ⊗mm ⊗mm 3.62in 4.00in ⊗L / 247.20ci
Base Engine Ws uI-6−⊗ 91.9mm 101.6mm 3.62in 4.00in 4.05L / 247.2ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
108B Six − ⊗ Wd N ⊗ 108 ⊗ 3600 1991-1994
108B Six − ⊗ Ws N ⊗ 108 ⊗ 3600 1991-1994

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ws uI-6−⊗ ⊗mm ⊗mm 3.62in 4.00in ⊗L / 247.20ci
Base Engine Ws uI-6−⊗ 91.9mm ⊗mm 3.62in 4.00in 4.05L / 247.2ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
108C − ⊗ Wd N ⊗ 108 ⊗ 3600 1994-20??
108C − ⊗ Ws N ⊗ 108 ⊗? 3600 1994-20??

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts List. Wiring Diagram Rev J. Wiring Diagram Rev K, Wiring Diagram Rev L. Wiring Diagram Rev M, Wiring Diagram Rev N.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 4.13in 4.92in ⊗L / 262.00ci
Base Engine Ws uI-4−⊗ 105mm 125mm 4.13in 4.92in 4.3L / 262ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Century 110-T4 − ⊗ Wd T ⊗ 110 ⊗ 2400 2001-2004
Century 110-T4 − ⊗ Ws T 82 110 ⊗ 2400 2001-2004

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts Callout Drawing. Service Manual. Wiring Diagram 044781. Wiring Diagram Rev A.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ws uI-6−⊗ ⊗mm ⊗mm 3.96in 4.92in ⊗L / 345.30ci
Base Engine Ws uI-6−⊗ 98mm 125mm 3.86in 4.92in ⊗L / 345.3ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 120 − ⊗ Wd N ⊗ 115 ⊗ 2600 1978-1982
W 120 − ⊗ Ws N ⊗ 115 ⊗ 2600 1978-1982

NOTES: Westerbeke Webpage. SpecSheet. Parts List.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
? Ds uI-6−⊗ ⊗mm ⊗mm ⊗in ⊗in ⊗L / 346ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
6-346 − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 1972-1978

NOTES: Westerbeke Webpage, SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-6−⊗ ⊗mm ⊗mm 4.13in 4.92in ⊗L / 396.00ci
Base Engine Ws uI-6−⊗ 105mm 125mm 4.13in 4.92in 6.5L / 396ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Century 120-N6 − ⊗ Wd N ⊗ 120 ⊗ 2500 2001-2005
Century 120-N6 − ⊗ Ws N 89 120 ⊗ 2500 2001-2005

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts Callout Drawing. Service Manual. Wiring Diagram Rev A.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 4.13in 4.92in ⊗L / 264.00ci
Base Engine Ws uI-4−⊗ 105mm 125mm 4.13in 4.92in 4.3L / 264.00ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Century 120-T4A − ⊗ Wd T ⊗ 126 ⊗ 2400 2005-20??
Century 120-T4A − ⊗ Ws T 93 126 ⊗ 2400 2005-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts Callout Drawing. Wiring Diagram Rev A.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-6−⊗ ⊗mm ⊗mm 4.13in 4.92in ⊗L / 396.00ci
Base Engine Ws uI-6−⊗ 105mm 125mm 4.13in 4.92in 6.5L / 396ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Century 170-T6 − ⊗ Wd T ⊗ 170 ⊗ 2500 2001-2004
Century 170-T6 − ⊗ Ws T 127 170 ⊗ 2500 2001-2004

NOTES: Westerbeke Webpage. SpecSheet. Operator’s Manual. Parts Callout Drawing. Service Manual. Wiring Diagram Rev A.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-6−⊗ ⊗mm ⊗mm 4.13in 4.92in ⊗L / 396.00ci
Base Engine Ws uI-6−⊗ 105mm 125mm 4.13in 4.92in 6.5L / 396.00ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-20??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Century 170-T6A − ⊗ Wd T ⊗ 173 ⊗ 2200 2005-20??
Century 170-T6A − ⊗ Ws T 129 173 ⊗ 2200 2005-20??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts Callout Drawing. Wiring Diagram Rev A.
++++++++++++++++

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ds uI-⊗−⊗ ⊗mm ⊗mm ⊗in ⊗in ⊗L / ⊗ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
? − ⊗ Ds T ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
? − ⊗ Ds T ⊗ ⊗ ⊗ ⊗ 19??-19??

NOTES: Westerbeke Webpage, SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

Table Under Development
If you can help us add brand information, Spec Sheets, Manuals, etc. that we lack, please submit the link or PDF to Editor♥EverythingAboutBoats.org (Replace “♥” with “@”) so we can add it to the website. Thanks!

More from Wikipedia

More from BoatDiesel.com

More from _____

+

Diesel Engine Duty Ratings

Westerbeke Duty Ratings

Con = Continuous, Constant

Int = Intermittent (One Hour Rating)

Max = Maximum

Usable

NMI = Normal Max Intermittant

SPRM = Special Peak Rating Max

CRPO = 

URPO = 

+

Pleasure Craft

RATING: W = Workboat (Usually 90% of P), (6270) C = Continuous, P = Pleasure (Intermittent)
^  COM = Commercial, R = Recreational, WB = Work Boat, PC = Pleasure Craft, M = Medium
^  CON = Continuous, INT = Intermittent, PLE = Pleasure
^  CA = Continuous “A”, CB = Continuous “B”, BS = HP, BS OL = BHP in Overload
^  CON, CD, HD, MCD, MD, INT, ID, GS, HO, etc. (See Duty Ratings at end of this table)

+

Specifications For Westerbeke
4-Stroke Cycle Gasoline Marine Engines
(by Ascending Horsepower)

TABLE KEY: (Table still under development)
DS = Data Source: (such as Webpages, DataSheets or SpecSheets, Catalogs, Manuals,+) with Links
^  __ = Source wLink, W… = Westerbeke, Ww = Westerbeke Webpage, Ws = Westerbeke SpecSheet
^  BD = BoatDiesel.com = …B, …d = Directory, …w = Webpage, …s = SpecSheet, …c = Catalog/Brochure,
^   …o = Operator’s Manual, …m = Service/Technical Manual, …1,2,3,A,B,C,etc = Source #, Version, Revision
⊗ = Data Not Available from Data Source, ? = …? = Data Not Confirmed
CYL = Cylinder Configuration-Number−Liner: I = In-Line, U = u… = Upright (Vertical)
^  Liner: W = Wet Liner(s), D = Dry Liner(s), WD = Combo Wet + Dry Liner(s),
^  ^  P = Parent/Native Bore (Determined from Service Manual & Parts List, S = Sleeved (Press fit?)
^  …mm = Millimeters, …in = Inches, …cc = Cubic Centimeters, …L = Litres (Liters), …ci = Cubic Inches
♣ = Base Engine Manufacturer, ♣ = Engine Mariniser (Marinizer)
MODEL: EC = Engine Code
RATING: See Engine Duty Ratings at end of this table.
ASP: N = Naturally Aspirated, T = Turbocharged, S = Supercharged
^  Ta = Turbocharged & Aftercooled, Ti = Turbocharged and Intercooled
^  …S = …s = w/Seawater Intercooler, …R = …r = w/Raw Water Intercooler
^  -INJ: M = Mechanical Injection, i = Integral Injector, Cr = Common Rail, E = Electronic Injection
KW = Kilowatts, HP = Horsepower, BHP = Brake Horsepower, MHP = Metric Horsepower
@RPM = Power Ratings @ Revolutions Per Minute
YEARS MFR’D: Beginning-Ending, Trailing  “–”  (Dash) without an Ending Date = Still in Production.
^  Data from Westerbeke Propulsion Model History (12/8/05) updated from Westerbeke Website.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww U-1−⊗ ⊗mm ⊗mm 2.76in 2.76in ⊗L / 16.41ci
Base Engine Ws U-1−⊗ ⊗mm ⊗mm 1.75in 2.756in ⊗L / 16.3ci
♣  MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣  WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
Vire 7 − ⊗ Wd N ⊗ 7 ⊗ 3200 19??-19??
Vire 7 − Con Ws N ⊗ 7 ⊗ 3200 19??-19??
Vire 7 − ⊗ Ws N ⊗ 7.3* ⊗ 3700 19??-19??
Vire 7 − ⊗ Ws N ⊗ 7.1* ⊗ 4000 19??-19??

NOTES: Westerbeke Webpage. SpecSheet (*see Power Curve for HP). Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm 2.99in 2.87in ⊗L / 60.60ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 26G − ⊗ Wd N ⊗ 26 ⊗ 3000 1986-1999
W 26G − ⊗ Ds N ⊗ 26 ⊗ 3000 1986-1999

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-3−⊗ ⊗mm ⊗mm ⊗in ⊗in ⊗L / ⊗ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 26GX − ⊗ Wd N ⊗ 26 ⊗ 3000 19??-19??
W 26GX − ⊗ Ds N ⊗ 26 ⊗ 3000 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm ⊗in ⊗in ⊗L / ⊗ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 41G − ⊗ Wd N ⊗ 41 ⊗ 3600 1986-1993
W 41G − ⊗ Ds N ⊗ 41 ⊗ 3600 1986-1993

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−⊗ ⊗mm ⊗mm 3.38in 3.70in ⊗L / 133.30ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 20??-
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 70GA − ⊗ Wd N ⊗ 66 ⊗ 3600 2003-
W 70GA − ⊗ Ds N ⊗ 66 ⊗ 3600 2003-

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−? ?mm ?mm ?in ?in ?L / ?ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 71G − ⊗ Wd N ⊗ 70 ⊗ 3600 19??-19??
W 71G − ⊗ Ds N ⊗ 70 ⊗ 3600 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ww uI-4−? ?mm ?mm ?in ?in ?L / ?ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-20??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
W 70G − ⊗ Wd N ⊗ 70 ⊗ 3600 1988-2001
W 70G − ⊗ Ds N ⊗ 70 ⊗ 3600 1988-2001

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.
++++++++++++++++++++++++++++

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
Base Engine Ds uI-?−? ?mm ?mm ?in ?in ?L / ?ci
♣ MfrBRAND
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
? − ⊗ Ds T ⊗ ⊗ ⊗ ⊗ 19??-19??
♣ WESTERBEKE
MODEL − RATING DS ASP KW BHP MHP @RPM YEARS MFR'D
? − ⊗ Ds N ⊗ ⊗ ⊗ ⊗ 19??-19??
? − ⊗ Ds T ⊗ ⊗ ⊗ ⊗ 19??-19??

NOTES: Westerbeke Webpage. SpecSheet. Installation Drawing. Operator’s Manual. Parts List. Parts Manual. Service Manual. Technical Manual. Wiring Diagram. Wiring Diagram Rev A. Wiring Diagram Rev B. Wiring Diagram Rev C.

Table Under Development
If you can help us add brand information, Spec Sheets, Manuals, etc. that we lack, please submit the link or PDF to Editor♥EverythingAboutBoats.org (Replace “♥” with “@”) so we can add it to the website. Thanks!

+

Literature & Manuals

Catalogs

Westerbeke Product Catalog (English).
Westerbeke Product Catalog (Portuguese).
Westerbeke Product Catalog (Spanish).

Brochures

Brochures.
^  From _____

SpecSheets, etc. By Model (in Ascending Horsepower) w/Links:
Models (w/Links to Westerbeke’s Document Library Webpages), HP (w/Links to Westerbeke’s Model Spec Webpages), SpecSheets,

ΞPIXΞ

s, Installation Drawings, Operator’s Manuals, Parts Lists, Service Manuals, and Wiring Diagrams.

Westerbeke Diesel Propulsion Engines

Model HP SpecSheet

ΞPIXΞ
s InstallDwg OpManual Parts Service Wiring
DS 5 5 SpecSheet Parts Service.
7A One 6.4 SpecSheet OpManual Parts 1‚A‚B‚C
W 7 7 SpecSheet Parts Service
DS 7 7 SpecSheet Parts Service
10 Two 10 SpecSheet OpManual Parts Service
W 10 10 SpecSheet
11A One 10.7 SpecSheet InstallDwg OpManual A‚B‚C
12B Two 12 SpecSheet InstallDwg OpManual Service K‚L‚M‚N
12C Two 12 SpecSheet InstallDwg OpManual Parts Service K‚L‚M‚N
12D Two 12 SpecSheet

ΞPIXΞ
InstallDwg OpManual Parts Service N
W 13 13.5 SpecSheet OpManual Parts Service
W 13A 13.5 SpecSheet OpManual Parts Service
Pilot 50 15 SpecSheet
4-60 15 SpecSheet Parts Service
20B Two 18 SpecSheet

ΞPIXΞ
OpManual Parts Service
W 18 18 SpecSheet OpManual Parts Service
W 20 20 SpecSheet
W 21 22? SpecSheet OpManual Parts Service
W 21A 22 SpecSheet OpManual Parts Service
L-25 22 SpecSheet Parts Service
RD-60 22 SpecSheet Parts Service
W 30 25 SpecSheet Parts Service
30C Three 25 SpecSheet

ΞPIXΞ
InstallDwg OpManual Parts Service N
W 27 27 SpecSheet OpManual Parts Service
30B Three 27 SpecSheet InstallDwg OpManual Parts Service
35E Three 28 SpecSheet

ΞPIXΞ
InstallDwg OpManual Parts Service N
35C Three 29 SpecSheet InstallDwg OpManual Parts Service
W 27A 30 SpecSheet OpManual Parts Service
RD-80 30 SpecSheet InstallDwg Service
W 33A 31 SpecSheet OpManual Parts Service
35D Three 31 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
35B Three 32 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
W 33 33 SpecSheet OpManual Parts Service.
4-99 34 SpecSheet Parts Service
38B Four 37 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
W 40A 37 SpecSheet
W 40 37 SpecSheet Parts Service
44C Four 38 SpecSheet

ΞPIXΞ
InstallDwg OpManual Parts Service N
44A Four 40 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
4-107 40 SpecSheet Parts Service
W 50 41 SpecSheet Parts Service
42B Four 42 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
44B Four 44 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
W 46 46 SpecSheet OpManual Parts Service B1‚B2
55D Four 48 SpecSheet

ΞPIXΞ
OpManual Parts Service
W 52 52 SpecSheet OpManual Parts Service
W 60 53 SpecSheet Parts Service
55A Four 55 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
55C Four 55 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
55B Four 55 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
W 58 58 SpecSheet OpManual Parts Service
63D Four 61 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
63B Four 63 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
63C Four 63 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
64A Four 64 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
65B Four 66 SpecSheet InstallDwg OpManual Parts Service M
65A Four 68 SpecSheet

ΞPIXΞ
InstallDwg OpManual Parts Service J‚K‚L‚M‚N
W 70 70 SpecSheet OpManual Parts Service
71B Four 71 SpecSheet OpManual Parts Service J‚K‚L‚M‚N
71C Four 71 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
W 80 75 SpecSheet Parts Service
82B Four 82 SpecSheet InstallDwg OpManual Parts Service J‚K‚L‚M‚N
90A Four 90 SpecSheet InstallDwg Parts Service J‚K‚L‚M‚N
W 100 100 SpecSheet OpManual Parts Service
108B Six 108 SpecSheet OpManual Parts J‚K‚L‚M‚N
108C Six 108 SpecSheet OpManual Parts J‚K‚L‚M‚N
W 120 115 SpecSheet Parts
CENTURY
80-N4 80 SpecSheet OpManual Parts Service A
110-T4 110 SpecSheet OpManual Parts Service A
120-N6 120 SpecSheet OpManual Parts Service A
120-T4A 126 SpecSheet InstallDwg OpManual Parts A
170-T6 170 SpecSheet OpManual Parts Service A
170-T6A 173 SpecSheet InstallDwg OpManual Parts A

Westerbeke Gasoline Propulsion Engines

Model HP SpecSheet

ΞPIXΞ
s InstallDwg OpManual Parts Service Wiring
Vire 7 7 SpecSheet InstallDwg OpManual Parts Service
W 26G 26 SpecSheet InstallDwg OpManual Parts Service
W 26GX 26 SpecSheet InstallDwg OpManual Parts Service
W 41G 41 SpecSheet InstallDwg OpManual Parts Service
W-70GA 66 SpecSheet InstallDwg OpManual Parts Service
W 71G 70 SpecSheet InstallDwg OpManual Parts Service
W 70G 70 SpecSheet InstallDwg OpManual Parts Service

Westerbeke Diesel Generators

Model HP SpecSheet

ΞPIXΞ
s InstallDwg OpManual Parts Service Wiring
M H SpecSheet

ΞPIXΞ
InstallDwg OpManual Parts Service

Westerbeke Gasoline Generators

Model HP SpecSheet

ΞPIXΞ
s InstallDwg OpManual Parts Service Wiring
M H SpecSheet

ΞPIXΞ
InstallDwg OpManual Parts Service

More from Westerbeke

Charts and Graphs

Charts and Graphs.
^  From _____

Pictures

The new 5.5/5.0 EGCD.

The new 7.6/5.5 EGTD.

Press Releases (Date = YYMMDD)

160713 The new 5.5/5.0 EGCD is here!.

161209 Westerbeke Corporation Affiliate, WBIP LLC, Settles Patent Infringement Lawsuit Against Kohler Co.

160909 The new 7.6/5.5 EGTD is here!.

Model History

Westerbeke Propulsion Model History (12/8/05).

Serial Number Guide – Manufacture Date Code Identification

Serial Number Guide – Manufacture Date Code Identification (5/12).

Installation Manuals/Instructions

Westerbeke Installation Manual (6/16).

Engine Replacement Guide 11-11.

Installation Diagrams & Drawings with Dimensions

Installation Drawing #44923.

Installation Drawing #54276 for Westerbeke 12B Two.

Installation Drawing #54276 for 12C Two.

Installation Drawing #49799 for 20B Two.

Installation Drawing for RD-80.

Installation Drawing for 30B Three.

Installation Drawing for 30C Three.

Installation Drawing for 35C Three.

Installation Drawing #44180 for 35C,D,E,Three, 44A,B,C Three (4/15).

Installation Drawing #54876 for 55D (7/21/10)

Installation Drawing #47963 for 55B.

Installation Drawing #53998 for 65A,B.

Installation Drawing #53998 for 65A.

Installation Drawing #41185 for 71C Four (4/7/95).

Installation Drawing #38050 for 82B Four (6/24/90)

Installation Drawing #43319 for 90A Four (2/24/95)

Installation Diagrams & Drawings with Dimensions.
^  From _____

Owner/Operator’s Manuals

Operator’s Manual 7A One, 11A One.

Operator’s Manual #37185  for Westerbeke 12B-Two (1/88).

Operator’s Manual #39717 rev3 for 12C-Two, 12D-Tw0 (1/1/11).

Operator’s Manual #32363 for W13, W21, W-27, W 33.

Operator’s Manual #36195 for W13A, W18, W21A, W 33A (7/86).

Operator’s Manual #36906 for 20B-Two, 30B-Three, 30C-Three.

Operator’s Manual #44180 (rev4) for 35C Three, 35D Three, 35E Three, 44A Four, 44B Four, 44C Four (4/15).

Operator’s Manual #44180 for 35C,D,E,Three, 44A,B,C Three (4/15). ^Duplicate^

Operator’s Manual #33507 for W52, W58, W70, W100.

Operator’s Manual #42286 (rev5) for 55B-Four, 55C-Four, 55D-Four (1/14).

Operator’s Manual #41562 (2nd Ed) for 55A Four (2/97).

Operator’s Manual #33507 for W52, W58, W70, W100 (?).

Operator’s Manual #45150 (1st Ed) for 63D Four (3/01).

Operator’s Manual #38922 (Ed 5) for 63B,C Four, 71B,C,  Four, 82B Four, 108B,C Six (10/06).

Operator’s Manual #49112 (1st Ed) for 64A Four (12/03).

Operator’s Manual #54218 (Rev 3) for 65A,B Four (10/14).

Owner/Operator Manuals.
^  From _____

Parts Lists/Manual/Schematics with Exploded Views & Parts Lists

Westerbeke Parts Supersession Listing (Aug 2014).

Universal Parts Supersession Listing (Aug 2014).

Part Numbers for Spare Parts Kit A.

Sea Water Pumps #24143 and 048080.

Parts List for Westerbeke DS5, DS7, W7, WPD3, WPD4.

Parts Manual Preliminary 7A.

Parts List for Westerbeke W10-Two, 3KW,

Parts Manual for Westerbeke 12C-Two.

Parts List #32139 for W13, W18, W21, W27, W33, 4.4, 6, 7.7, 8, 11, 12.5kW (7/86).

Parts List & Technical Manual #16521 for 4-60 (6/1/72).

Parts List for Westerbeke 20B-Two, 30B,C-Three (10/94).

Technical Manual & Parts List #19419 fir L25 (7/10).

Parts List #13945 (8th Ed) for W30 (10/80)

Parts List #48220 (1st ed) for 35C, 35D, 6kW, 7.5kW, 8kW, 10kW (3/03).

Parts Callout Drawing #54700 for 35C,D,E Three (7/6/10).

Parts List #47631 (1st Ed) for 44A,B,(C) 9,4kW, 12kW, 12.5kW, 15kW (10/02).

Parts Callout Drawing #54694 for 44A,B,C (7/6/20).

Parts Callout Drawing #54700 (7/6/10).

Parts Callout Drawing #54866 (revB) for 55D (6/23/10).

Parts List #13316 (Ed 4) for W 60 (4/78).

Parts List #44000 (Ed 1) for 55A Four (8/99).

Parts Callout Drawing #47972 (rev e) for 55B,C (10/9/02,7/23/13).

Parts List #24577 (Ed 2) for W 58, 20kW (5/82).

Parts List #38824 (Ed 2) for 63B,C Four, 12.0 BTD, 15.0 BTD (8/98).

Parts Callout Drawing #52069 for 64A Four (6/14/05).

Parts Callout Drawing #54222 for 65A,B Four (10/6/08).

Parts List #33620 (Ed 1) for W70~W100 (2/84).

Parts List #39904 (Ed 1) for 71B, 16.0 BED, 20.0 BED (4/93).

Parts List #15162 (Ed 4) for W 80, 120, BR30,45 (6/1/77).

Parts Callout Drawing #48619 for 80-N4 (6/30/03)

Parts Callout Drawing #48620 (rev C) for 110-T4, 120-T4A (2/9/12).

Parts List #40000 (Ed 1) for 82B, 20 BED, 25 BED (5/94).

Parts List #41512 (Ed 3) for 90A, 25,32 BEDA (7/01).

Parts List #41200 (Ed 1) For 108B,C Six, 25 BEDB, 32 BEDB (8/95).

+

Parts Bulletins

Parts Bulletin 2004-7 Tech Manual 30041.pdf (6/4/04).

Parts Bulletin 2007-2: Fuel Filter 03020 (4/25/07).

Parts Bulletin 2008-4: Paint Storage (11/24/08).

Parts Bulletin 2009-8 REVISED: Air Intake Filter Housing P/N 044723 (9/17/10).
Applies To: 35C/35D Three, 8.0BTDA/10.0 BTDA, 12.5 BTDB and 15.0 BTDC

Parts Bulletin 2010-2: Piston Wrist Pin Size Change (6/11/10).

Parts Bulletin 2011-2: Coolant Hose Change (9/7/11).
Applies To: 35B, 35C, 35D Three and 44A Four

Parts Bulletin 2012-1 BW7 and JS Transmission (4/13/12).
Applies To: 20B Two, 30B Three, 35B Three, 35C Three, 35D Three, 38B Four, 42B Four, 44A Four

Parts Bulletin 2012-2: BW7 Transmission (4/13/12).
Applies To: 20B Two, W 27, W 33, 30B Three, 35D Three, 35E Three, 44B Four

Parts Bulletin 2013-1 valve diameter change (6/18/13).

Parts Bulletin 2013-3: Model Reference Clarification Parts List 032139 (5/10/13).

Parts Bulletin 2015-3: 72A Alternator Changes to 65A (3/23/15).

Parts Bulletins.
^  From _____

Repair/Service/Workshop/Technical Manuals

Technical Manual for DS5, DS7, W7, WPD3, WPD4.

Technical Manual for 10-Two, 12B-Two, WMD 3 KW, WMD 2.4 KW.

Service Manual #55411 for 12C-Two, 12D-Two (6/1/12).

Service Manual #43444 for W13, W13A, W18, W21, W21A, RD-60, 35B Three, 3.3kW, 4.5kW, 5.8kW, 6kW, 7.5kW, 4.4kW, 6kW, 7.7kW, 8kW, 10kW (4/99).

32363 for W13, W21, W27, W33.

Technical Manual & Parts List #16521 for 4-60 (6/1/72).

Technical Manual #37600 for 20B-Two, 30B,C-Three (4/90).

Technical Manual & Parts List #19419 for L25 (7/10).

Technical Manual #11874 (5th ed) for W30 (9/80).

Service Manual #43440 (2nd Ed) for W-27, W-27A, W-33, W-33A, 38B-Four, 42B-Four, 8.3kW, 9.4kW, 11kW, 12.5kW (4/98).

Service Manual #45100 (Rev 2) for 35C,35D,35E Three, 44A,44B,44C Four (4/10).

Service Manual #32460 (2nd Ed) for W-52/63B, 63C-Four, 12kW, 15kW (1/99).

Service Manual #49970 (2nd Ed) for 55B-Four, 55C-Four, (55D-Four) (9/06).

Service Manual #15204 (Ed 4) for W 60, WPDS-20 (9/79).

Service Manual #43377 (1st Ed) for 55A Four (9/98).

Technical Manual #24331 (Ed 3) for W 58, 20.0YD, 20.0 WTA, 16.0 WTA (11/90).

Service Manual #53017 (3rd Rev) for 65A Four, 33, 28.5, 25.5 EDE, 26.0, 20.0 EDER (7/14).

Technical Manual #33355 (Ed 1) for W70~W100 25,32kW (7/83).

Service Manual #43317 (2nd Ed) for 71B,C-Four, 16kW, 20kw.

Service Manual #47069 (1st Ed) for 80N4, 110T4, 120N6, 170T6, 35kW~95kW (1/02).

Service Manual #40485 (Ed 1) for 82B Four, 20,25 BED (11/98).

Servicel Manual #43750 (1st Ed) for 90A, 25,32 BEDE (9/00).

Service Manual 14088B Navy+

Service/Repair/Workshop/Technical Manuals.
^  From _____

Wiring Diagrams

^ Westerbeke Diesel Propulsion Engines
Wiring Diagram for 7A One #045593 (12/12/08).
Wiring Diagram for 7A One #045593 Revision A (12/12/08).
Wiring Diagram for 7A One #045593 Revision B (12/12/08).
Wiring Diagram for 7A One #045593 Revision C (12/12/08).
Wiring Diagram for 11A One #044542 (12/12/08).
Wiring Diagram for 11A One #044542 Revision A (6/20/00).
Wiring Diagram for 11A One #044542 Revision B (8/22/00).
Wiring Diagram for 11A One #045593 Revision C (2/21/00).
Wiring Diagram #039144 rev K for Westerbeke 12B Two ~ 82B Four, 108C Six (12/12/08).
Wiring Diagram #039144 rev L for Westerbeke 12B Two ~ 82B Four, 108C Six (12/12/08).
Wiring Diagram #039144 rev M for Westerbeke 12B Two ~ 82B Four, 108C Six (3/2/09).
Wiring Diagram #039144 rev N for Westerbeke 12B Two ~ 82B Four, 108C Six (8/7/08).
Wiring Diagram #039144 rev M for Westerbeke 12B Two ~ 82B Four, 108C Six (3/2/09).
Wiring Diagram #044781 (rev A) for 80NA, 110-T4, 120-N6, 170-T6.
Wiring Diagrams
^  From _____

Service Bulletins

Service Bulletin #103: Tach Drive Cover Plate (1/22/80).

Service Bulletin #104: S.W. Pump Pulley Set Screw (1/22/80).

Service Bulletin #105: Cylinder Head Nut Torque (2/8/80).

Service Bulletin #106: Sea Water Pump Weep Hole (2/8/80).

Service Bulletin #125: Oil Pressure Switches (8/14/83).

Service Bulletin #136: Shift Lever (2/9/84).

Service Bulletin #155: Keyswitch (6/21/85).

Service Bulletin #238: Fuel Pump Inlet Filter Part Number 048076 (2/28/03).

Service Bulletin #239: Transmission Lubricant Change (10/27/03)

Service Bulletin #242: Manufacture Date Code (8/20/04).

Service Bulletin #251: E10 Ethanol Advisory.

Service Bulletin #277: Tachometer Calibration (10/23/15)

Service Advisory #2007-1: Carburetor Contamination.

Service Bulletins.
^  From _____

More from Westerbeke Propulsion Engine Document Library.

Product Recalls

RECALL – Service Bulletin 225 Starter Motor – 1/28/1997 – Recall Type: Electrical DC.
Affected Models: 4.0 BCG, 4.5 BCG, 6.5 BCG, 7.0 BCG, 8.5 BTG, 8.5 BTGA, 9.0 BTG, 12.5 BTG, 15.0 BTG, W26G, W26GX, W41G, W70G

RECALL – Bridge Rectifier – 10/30/1998 – Recall Type: Electrical AC.
Affected Models: 3.75 BCGTC, 3.75 BCGTE, 4.5 BCGTC, 4.5 BCGTE, 6.0 BCGTC, 6.0 BCGTE, 7.2 BCGTC, 9.6 BCGTC

RECALL – Service Bulletin #246: Toggle Switch – 3/16/2007 – Recall Type: Electrical DC.
Affected Models: 5.0BCG, 5.0BCGA, 7.0BCGC, 7.0BCGD, 8.0BEG, 10.0BEG, 12.5BEG, 15.0BEG, 20.0BEG, 20.0BEGA, 25.0BEGA

RECALL – Fuel Pump Energized – 8/10/2007 – Recall Type: Fuel.
Affected Models: 4.2 SBCG, 5.0 SBCG, 5.4 SBCG, 6.5 SBCG, 6.4 SBCG, 8.0 SBCG, 10.0 SBEG, 11.6 SBEG, 12.5 SBEG, 14.0 SBEG, 16.0 SBEG, 18.0 SBEG, 22.5 SBEG

Forum Posts

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Westerbeke by Bill Parlatore from PassageMaker ©2005

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Contact Information

Westerbeke Corporation
150 John Hancock Road
Myles Standish Industrial Park
Taunton, MA 02780
Telephone: (508) 823-7677
Fax Line: (508) 884-9688
Toll Free: 1-8
Website: www.westerbeke.com/index.htm
Contact Form: www.westerbeke.com/pages/contact.htm
Email: internet#westerbeke.com

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please let us know along with any corrections, additions, updates, etc. via email to Editor♥EverythingAboutBoats.org (Replace “♥” with “@”). Thank you!

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