John Deere 6068

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^  John Deere: Introduction, History, Contact Information Link, etc.
^  John Deere 6068: Overview, History, etc.
^  John Deere 6068: Specifications w/Engine Duty Ratings, etc.
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In 1837, John Deere, blacksmith and inventor, had little more than a blacksmith shop, a discarded steel saw, and an idea that would help farmers, changing the face of agriculture for all time. Today, Deere & Company is one of the world’s most admired businesses.
See our John Deere webpage for company history and contact information, PLUS information about other John Deere Products.

John Deere 6068
Overview and History

The John Deere 6068 is a Six cylinder, Four-Stroke Cycle, Upright Inline, Over-Head Valve diesel marine engine. The base engine has also been marinized and marketed by AmMarine, Lugger and Nanni.

+

Specifications For John Deere 6068 Series
4-Stroke Cycle Diesel Marine Engines
Including Other Marinized Versions & Generators

TABLE KEY:
⊗ = Data Not Available from Data Source. ? = …? = ¿…? = Data Not Confirmed.
DS = Data Source: D = John Deere. L = Lugger. N = Nanni. BD = BoatDiesel.com = …B.
^  …d = Directory. …w = Webpage. …y = Years Mfr’d History. …c = Catalog. …b = Brochure. …s = SpecSheet.
^  …o = Owner’s/Operator’s Manual. …m = Service/Repair/Technical/Workshop/Shop Manual.
^  …p = Parts List/Manual. …h = History. …1,2,3,A,B,C,etc = Source #, Version, Revision.
CYL = Cylinder Configuration-Number−Liner Type:
^  Cylinder Configuration: u… = Upright (Vertical). I = In-Line.
^  Liner Type: W = Wet Liner(s). D = Dry Liner(s).
BORE & STROKE: …mm = Millimeters. …” = …in = Inches.
DISPLACEMENT: …L = Liters (Litres). …ci = Cubic Inches (in³).
⇑ = Base Engine Manufacturer. ⇒ = Engine Marinizer (Mariniser).
MODEL: EC = Engine Code. Cylinder Block Capacity ID Code. TC = Turbocharged.
RATING: See the Engine Duty Ratings at the end of the table.
ASP-F: Aspiration-Fueling: N = Naturally Aspirated. T = Turbocharged. …a = Aftercooled.
^  …R = …r = w/RawWater (Seawater) Cooled Intercooler/Aftercooler (Charged Air Cooler).
^  …F =…f = w/FreshWater (Engine Coolant) Cooled Intercooler/Aftercooler (Charged Air Cooler).
^  Diesel: M = Mechanical Injection. C = Common Rail. e = Electronic Injection.
POWER: 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 (BOLD).

Click on Model Links below for other Model Pages. Click on Data Source Links for Catalogs, Brochures, SpecSheets, Operator’s Manuals, Shop Manuals, etc.

John Deere 6068D (Naturally Aspirated)

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
John Deere 6068D ? IL-6−W 107mm 127mm 4.21in 5in 6.8L / 415ci
⇑ JOHN DEERE
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
6068DFM70? – M1? ? N-M? ⊗ ⊗ ⊗ ⊗ ⊗-⊗
⇒ LUGGER
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗
⇒ NANNI
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗

NOTES:

John Deere 6068T (Turbocharged)

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
John Deere 6068T Dc1 uI-6−⊗ ⊗mm ⊗mm ⊗in ⊗in 6.8L / ⊗ci
John Deere 6068T Dc2 uI-6−⊗ ⊗mm ⊗mm ⊗in ⊗in 6.8L / ⊗ci
John Deere 6068T Dw2 uI-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
John Deere 6068T Ds2 uI-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
John Deere 6068T Dw3 uI-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
John Deere 6068T Ds3 uI-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
⇑ JOHN DEERE
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
6068TFM50 – ⊗ Dc1 T-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-
6068TFM50 – M1 Dc2 T-⊗ 115 154 ⊗ 2300 ⊗-
6068TFM50 – M1 Dw2 T-⊗ 115 154 ⊗ 2300 ⊗-
6068TFM50 – M1 Ds2 T-⊗ 115 154 ⊗ 2300 ⊗-
6068TFM50 – M2 Dc2 T-⊗ 130 175 ⊗ 2400 ⊗-
6068TFM50 – M2 Dw2 T-⊗ 130 175 ⊗ 2400 ⊗-
6068TFM50 – M2 Ds2 T-⊗ 130 175 ⊗ 2400 ⊗-
6068TFM50 – M3 Dc2 T-⊗ 149 200 ⊗ 2500 ⊗-
6068TFM50 – M3 Dw2 T-⊗ 149 200 ⊗ 2500 ⊗-
6068TFM50 – M3 Ds2 T-⊗ 149 200 ⊗ 2500 ⊗-
6068TFM50 – M4 Dc2 T-⊗ 168 225 ⊗ 2600 ⊗-
6068TFM50 – M4 Dw2 T-⊗ 168 225 ⊗ 2600 ⊗-
6068TFM50 – M4 Ds2 T-⊗ 168 225 ⊗ 2600 ⊗-
6068TFM75 – ⊗ Dc1 T-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-
6068TFM75 – M1 Dc2 T-⊗ 118 158 ⊗ 2400 ⊗-
6068TFM75 – M1 Dw3 T-⊗ 118 158 ⊗ 2400 ⊗-
6068TFM75 – M1 Ds3 T-⊗ 118 158 ⊗ 2400 ⊗-
6068TFM75 – M2 Dc2 T-⊗ 133 178 ⊗ 2500 ⊗-
6068TFM75 – M2 Dw3 T-⊗ 133 178 ⊗ 2500 ⊗-
6068TFM75 – M2 Ds3 T-⊗ 133 178 ⊗ 2500 ⊗-
6068TFM75 – M3 Dc2 T-⊗ 150 201 ⊗ 2600 ⊗-
6068TFM75 – M3 Dw3 T-⊗ 150 201 ⊗ 2600 ⊗-
6068TFM75 – M3 Ds3 T-⊗ 150 201 ⊗ 2600 ⊗-
⇒ LUGGER
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗
⇒ NANNI
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗

NOTES:

John Deere 6068A (Antifreeze/Coolant Cooled Aftercooler)

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
John Deere 6068A Dc1 IL-6−⊗ ⊗mm ⊗mm ⊗in ⊗in 6.8L / ⊗ci
John Deere 6068A Dc2 IL-6−⊗ ⊗mm ⊗mm ⊗in ⊗in 6.8L / ⊗ci
John Deere 6068S Dw4 IL-6−W 107mm 127mm 4.21in 5.00in 6.8L / 415ci
John Deere 6068S Ds4 IL-6−W 107mm 127mm 4.21in 5.00in 6.8L / 415ci
John Deere 6068S Dw5 IL-6−W 107mm 127mm 4.21in 5.00in 6*L / 6*ci
John Deere 6068S Ds5 IL-6−W 107mm 127mm 4.21in 5.00in N/A*L / 6*ci
⇑ JOHN DEERE
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
6068AFM75 – ⊗ Dc1 TaF-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-
6068AFM75 – M1 Dc2 TaF-Ce 172 230 ⊗ 2300 ⊗-
6068AFM75 – M1 Dw4 TaF-Ce 172 230 ⊗ 2300 ⊗-
6068AFM75 – M1 Ds4 TaF-Ce 172 231 ⊗ 2300 ⊗-
6068AFM75 – M2 Dc2 TaF-Ce 198 266 ⊗ 2400 ⊗-
6068AFM75 – M2 Dw4 TaF-Ce 198 266 ⊗ 2400 ⊗-
6068AFM75 – M2 Ds4 TaF-Ce 198 266 ⊗ 2400 ⊗-
6068AFM75 – M3 Dc2 TaF-Ce 224 300 ⊗ 2500 ⊗-
6068AFM75 – M3 Dw4 TaF-Ce 224 300 ⊗ 2500 ⊗-
6068AFM75 – M3 Ds4 TaF-Ce 224 300 ⊗ 2500 ⊗-
6068AFM75 – M4 Dc2 TaF-Ce 246 330 ⊗ 2600 ⊗-
6068AFM75 – M4 Dw4 TaF-Ce 246 330 ⊗ 2600 ⊗-
6068AFM75 – M4 Ds4 TaF-Ce 246 330 ⊗ 2600 ⊗-
6068AFM85 – ⊗ Dc1 TaF-Ce ⊗ ⊗ ⊗ ⊗ ⊗-
6068AFM85 – M1 Dc2 TaF-Ce 100* 200* ⊗ 2300 ⊗-
6068AFM85 – M1 Dw5 TaF-Ce 100* 200* ⊗ 2300 ⊗-
6068AFM85 – M1 Ds5 TaF-Ce 172 230 ⊗ 2300 ⊗-
6068AFM85 – M2 Dc2 TaF-Ce 198 265 ⊗ 2400 ⊗-
6068AFM85 – M2 Dw5 TaF-Ce 198 265 ⊗ 2400 ⊗-
6068AFM85 – M2 Ds5 TaF-Ce 198 265 ⊗ 2400 ⊗-
6068AFM85 – M3 Dc2 TaF-Ce 224 300 ⊗ 2500 ⊗-
6068AFM85 – M3 Dw5 TaF-Ce 224 300 ⊗ 2500 ⊗-
6068AFM85 – M3 Ds5 TaF-Ce 224 300 ⊗ 2500 ⊗-
6068AFM85 – M4 Dc2 TaF-Ce 246 330 ⊗ 2600 ⊗-
6068AFM85 – M4 Dw5 TaF-Ce 246 330 ⊗ 2600 ⊗-
6068AFM85 – M4 Ds5 TaF-Ce 246 330 ⊗ 2600 ⊗-
⇒ LUGGER
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗
⇒ NANNI
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗

NOTES: *Error in Data Source.

John Deere 6068S (Seawater Cooled Aftercooler)

BASE ENGINE DS CYL BORE STROKE BORE STROKE DISPLACEMENT
John Deere 6068S Dc1 IL-6−⊗ ⊗mm ⊗mm ⊗in ⊗in 6.8L / ⊗ci
John Deere 6068S Dc2 IL-6−⊗ ⊗mm ⊗mm ⊗in ⊗in 6.8L / ⊗ci
John Deere 6068S Dw6 IL-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
John Deere 6068S Ds6 IL-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
John Deere 6068S Dw7 IL-6−W 106mm 127mm ⊗*in ⊗*in 6.8L / 415ci
John Deere 6068S Ds7 IL-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
John Deere 6068S Dw8 IL-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
John Deere 6068S Ds8 IL-6−W 106mm 127mm 4.17in 5.00in 6.8L / 415ci
⇑ JOHN DEERE
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
6068SFM50 – ⊗ Dc1 TaR-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-
6068SFM50 – M3 Dc2 TaR-Ce 176 236 ⊗ 2400 ⊗-
6068SFM50 – M3 Dw6 TaR-Ce 176 236 ⊗ 2400 ⊗-
6068SFM50 – M3 Ds6 TaR-Ce 176 236 ⊗ 2400 ⊗-
6068SFM50 – M4 Dc2 TaR-Ce 199 267 ⊗ 2500 ⊗-
6068SFM50 – M4 Dw6 TaR-Ce 199 267 ⊗ 2500 ⊗-
6068SFM50 – M4 Ds6 TaR-Ce 199 267 ⊗ 2500 ⊗-
6068SFM50 – M5 Dc2 TaR-Ce 224 300 ⊗ 2600 ⊗-
6068SFM50 – M5 Dw6 TaR-Ce 224 300 ⊗ 2600 ⊗-
6068SFM50 – M5 Ds6 TaR-Ce 224 300 ⊗ 2600 ⊗-
6068SFM75 – ⊗ Dc1 TaR-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-
6068SFM75 – M1 Dc2 TaR-Ce 186 249 ⊗ 2400 ⊗-
6068SFM75 – M1 Dw7 TaR-Ce ⊗* ⊗* ⊗ ⊗* ⊗-
6068SFM75 – M1 Ds7 TaR-Ce 186 249 ⊗ 2400 ⊗-
6068SFM75 – M2 Dc2 TaR-Ce 209 280 ⊗ 2500 ⊗-
6068SFM75 – M2 Dw7 TaR-Ce ⊗* ⊗* ⊗ ⊗* ⊗-
6068SFM75 – M2 Ds7 TaR-Ce 209 280 ⊗ 2500 ⊗-
6068SFM75 – M3 Dc2 TaR-Ce 239 321 ⊗ 2600 ⊗-
6068SFM75 – M3 Dw7 TaR-Ce ⊗* ⊗* ⊗ ⊗* ⊗-
6068SFM75 – M3 Ds7 TaR-Ce 239 321 ⊗ 2600 ⊗-
6068SFM75 – M4 Dc2 TaR-Ce 265 355 ⊗ 2700 ⊗-
6068SFM75 – M4 Dw7 TaR-Ce ⊗* ⊗* ⊗ ⊗* ⊗-
6068SFM75 – M4 Ds7 TaR-Ce 265 355 ⊗ 2700 ⊗-
6068SFM75 – M5 Dc2 TaR-Ce 298 400 ⊗ 2800 ⊗-
6068SFM75 – M5 Dw7 TaR-Ce ⊗* ⊗* ⊗ ⊗* ⊗-
6068SFM75 – M5 Ds7 TaR-Ce 298 400 ⊗ 2800 ⊗-
6068SFM85 – ⊗ Dc1 TaR-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-
6068SFM85 – M1 Dc2 TaR-Ce 186 249 ⊗ 2400 ⊗-
6068SFM85 – M1 Dw8 TaR-Ce 186 249 ⊗ 2400 ⊗-
6068SFM85 – M1 Ds8 TaR-Ce 186 249 ⊗ 2400 ⊗-
6068SFM85 – M2 Dc2 TaR-Ce 209 280 ⊗ 2500 ⊗-
6068SFM85 – M2 Dw8 TaR-Ce 209 280 ⊗ 2500 ⊗-
6068SFM85 – M2 Ds8 TaR-Ce 209 280 ⊗ 2500 ⊗-
6068SFM85 – M3 Dc2 TaR-Ce 239 321 ⊗ 2600 ⊗-
6068SFM85 – M3 Dw8 TaR-Ce 239 321 ⊗ 2600 ⊗-
6068SFM85 – M3 Ds8 TaR-Ce 239 321 ⊗ 2600 ⊗-
6068SFM85 – M4 Dc2 TaR-Ce 265 355 ⊗ 2700 ⊗-
6068SFM85 – M4 Dw8 TaR-Ce 265 355 ⊗ 2700 ⊗-
6068SFM85 – M4 Ds8 TaR-Ce 265 355 ⊗ 2700 ⊗-
6068SFM85 – M5 Dc2 TaR-Ce 298 400 ⊗ 2800 ⊗-
6068SFM85 – M5 Dw8 TaR-Ce 298 400 ⊗ 2800 ⊗-
6068SFM85 – M5 Ds8 TaR-Ce 298 400 ⊗ 2800 ⊗-
⇒ LUGGER
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗
⇒ NANNI
MODEL − RATING DS ASP-F kW BHP MHP @RPM YEARS MFR'd
⊗ − ⊗ ⊗ ⊗-⊗ ⊗ ⊗ ⊗ ⊗ ⊗-⊗

NOTES:

John Deere Engine Duty Ratings

The M rating definitions are provided as a guide to help in the selection of the engine that best fits the application requirements.
Ratings are based on the ISO 8655 standard power rating and the SAEJ1228 crankshaft power rating.
The M1 rating is for marine propulsion applications that may operate up to 24 hours per day at uninterrupted full power and have load factors* greater than 65 percent.
Possible applications: Line hauls tugs and towboats, fish and shrimp trawlers/draggers, and displacement hull fishing boats.

The M2 rating is for marine propulsion applications that typically operate between 3,000-5,000 hours per year and have load factors* up to 65 percent. This rating is for applications that are in continuous use and use full power for no more than 16 hours of each 24 hours of operation. The remaining time of operation is at or below cruising† speed.
Possible applications: Short-range tugs and towboats, long-range ferryboats, large passenger vessels, and offshore displacement hull fishing boats.

The M3 rating is for marine propulsion applications that typically operate between 2,000-4,000 hours per year and have load factors* up to 50 percent. This rating is for applications that use full power for no more than four hours out of each 12 hours of operation. The remaining time of operation is at or below cruising† speed.
Possible applications: Coastal fishing boats, offshore crew boats, research boats, short range ferryboats, and dinner cruise boats.

The M4 rating is for marine propulsion applications that typically operate between 1,000-3,000 hours per year and have load factors* below 40 percent. This rating is for applications that use full power no more than one hour out of each 12 hours of operation. The remaining time of operation is at or below cruising† speed.
Possible applications: Inshore crew boats, charter fishing boats, pilot boats, dive boats, and planning hull commercial fishing boats.

The M5 rating is for marine recreational and certification for light duty commercial Tier 3 propulsion applications that operate between 300-1,000 hours per year and have load factors* below 35 percent. This rating is for applications that use full power for no more than 30 minutes out of each eight hours. The remaining time of operation is at or below cruising† speed.
Possible applications: Recreational boats, tactical military vessels, and rescue boats.

* Load factor is the actual fuel burned over a period of time divided by the full-power fuel consumption for the same period of time. For example, if an engine burns 160 liters of fuel during an eight-hour run, and the full-power fuel consumption is 60 liters per hour, the load factor is 160 liters / (60 liters per hour x 8 hours) = 33.3 percent.
† Cruising is any operating time where the engine speed is more than 200 rpm less than the maximum attainable engine speed.
From John Deere Marine Engine Catolog.

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^  ^  ^  DIY: Engines (Fuels, Troubleshooting, Repair, Rebuilding vs Repowering,+)
^  ^  ^  ^  DIY: Engine Mechanical (Pistons, Rods, Crankshafts, Blocks, Heads, Valves,+)
^  ^  ^  ^  DIY: Engine Lubrication (Splash, Forced, Oil, Filtration, Additives, Oil Analysis,+)
^  ^  ^  ^  DIY: Engine Fuel (Petrol/Gasoline, Diesel, CNG,+)
^  ^  ^  ^  DIY: Engine Electrical (Starting, Charging, Instrumentation,+)
^  ^  ^  ^  DIY: Engine Cooling (Air, Raw, Fresh,+)
^  ^  ^  ^  DIY: Engine Exhaust (Dry, Wet,+)
^  ^  ^  ^  DIY: Engine Mounting (Hard, Soft,+)
^  ^  ^  DIY: Engine-to-Marine Gear Interfaces (Adapter Plates, Damper Plates, Jackshafts,+)
^  ^  ^  DIY: Marine Gears (Inboards, Inboard-Outboards, Outboards, Sail Drives, Pods,+)
^  ^  ^  DIY: Shafting (Shafts, Couplings, CVC Joints, Thrust Bearings, Seals, Cutlass, Struts,+)
^  ^  ^  DIY: Propellers (Screws, Water Jets, Paddle wheels,+)
^  ^  DIY: Electrical Systems
^  ^  ^  DIY: Direct Current
^  ^  ^  DIY: Alternating Current
^  ^  ^  DIY: Auxiliary Generators

PUBLICATIONS & MEDIA + Academy eLibrary (w/Reviews)
^  Books
^  Magazines
^  Websites (w/Links)
^  Videos
^  Authors

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