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John Deere Marine Propulsion Engines
Performance Data
Marine Propulsion Ratings

4045 marine engine 4045 (4.5L) 60-101 kW (80-135 hp)
The 4.5L four-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled or turbocharged with jacket water aftercooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.
6068 marine engine 6068 (6.8L) 118-298 kW (158-400 hp)
The 6.8L six-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled, turbocharged with jacket water aftercooling or turbocharged with sea water aftercooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.
6081 marine engine 6081 (8.1L) 175-280 kW (235-375 hp)
The 8.1L six-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled or turbocharged with jacket water aftercooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.
6090 marine engine 6090 (9.0L) 242-373 kW (325-500 hp)
The 9.0L marine engine is cooled by sea water through a heat exchanger. It is turbocharged and aftercooled and has a water jacketed exhaust manifold and turbocharger housing. The propulsion engines feature constant power to 400 rpm below rated speed making these engines an excellent choice for patrol craft, launches, work boats, fishing boats, trawler yachts and sport fishing boats.
6125 marine engine 6125 (12.5L) 254-455 kW (341-610 hp)
The 12.5L six-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled, turbocharged with jacket water aftercooling or turbocharged with sea water aftercooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.
6135 marine engine 6135 (13.5L) 306-559 kW (410-750 hp)
If you have a high horsepower marine application you'll definitely want to check out our new 13.5L engine. It delivers reliable and durable power up to 559 kW (750 hp) in a compact, heat exchanger cooled configuration with side or front service locations.
More horses in the engine room aren't the only things you'll like about our new 13.5L. Like all John Deere marine engines, it also features low noise, low vibration, and excellent fuel economy. And with high torque at low RPM, you get excellent vessel control and maneuvering. Enjoy all this, along with more power and flexibility, with our new 6135SFM75 marine engine.

Model Features Emission Level Rated Speed Displacement No. of Aspiration Rated power
  Spec sheet Technology RPM L cu in Cyl.   kW HP
4045D features
spec sheet
Tier 2
PowerTech
2500 4.5 275 4 Natural 60 80
4045D features
spec sheet
Non-Emissions Certified
PowerTech
2500 4.5 275 4 Natural 63 84
4045T features
spec sheet
Tier 2
PowerTech
2400 4.5 275 4 Turbo 80 107
4045T features
spec sheet
Tier 2
PowerTech
2500 4.5 275 4 Turbo 90 121
4045T features
spec sheet
Tier 2
PowerTech
2600 4.5 275 4 Turbo 101 135
4045T features
spec sheet
Non-Emissions Certified
PowerTech
2500 4.5 275 4 Turbo 101 135
4045T features
spec sheet
Non-Emissions Certified
PowerTech
2600 4.5 275 4 Turbo 112 150
6068T features
spec sheet
Tier 2
PowerTech
2400 6.8 415 6 Turbo 118 158
6068T features
spec sheet
Non-Emissions Certified
PowerTech
2400 6.8 415 6 Turbo 130.5 175
6068T features
spec sheet
Tier 2
PowerTech
2500 6.8 415 6 Turbo 133 178
6068T features
spec sheet
Tier 2
PowerTech
2600 6.8 415 6 Turbo 150 201
6068T features
spec sheet
Non-Emissions Certified
PowerTech
2600 6.8 415 6 Turbo 168 225
6068A features
spec sheet
Tier 2
PowerTech
2300 6.8 415 6 Aftercooled 172 231
6081A features
spec sheet
Tier 2
PowerTech
2100 8.1 494 6 Aftercooled 175 235
6068S features
spec sheet
Tier 2
PowerTech
2400 6.8 415 6 Seawater 176 236
6068S features
spec sheet
Tier 2
PowerTech
2400 6.8 415 6 Seawater 186 249
6068A features
spec sheet
Tier 2
PowerTech
2400 6.8 415 6 Aftercooled 198 266
6068S features
spec sheet
Tier 2
PowerTech
2500 6.8 415 6 Seawater 199 267
6068S features
spec sheet
Tier 2
PowerTech
2500 6.8 415 6 Seawater 209 280
6068A features
spec sheet
Tier 2
PowerTech
2500 6.8 415 6 Aftercooled 224 300
6068S features
spec sheet
Tier 2
PowerTech
2600 6.8 415 6 Seawater 224 300
6081A features
spec sheet
Tier 2
PowerTech
2200 8.1 494 6 Aftercooled 224 300
6068S features
spec sheet
Tier 2
PowerTech
2600 6.8 415 6 Seawater 239 321
6090S features
spec sheet
Tier 2
PowerTech
2100 9 549 6 Seawater 242 325
6068A features
spec sheet
Tier 2
PowerTech
2600 6.8 415 6 Aftercooled 246 330
6081A features
spec sheet
Tier 2
PowerTech
2300 8.1 494 6 Aftercooled 246 330
6125A features
spec sheet
Tier 2
PowerTech
1800 12.5 763 6 Aftercooled 254 341
6068S features
spec sheet
Tier 2
PowerTech
2700 6.8 415 6 Seawater 265 355
6081A features
spec sheet
Tier 2
PowerTech
2400 8.1 494 6 Aftercooled 280 375
6090S features
spec sheet
Tier 2
PowerTech
2200 9 549 6 Seawater 280 375
6125S features
spec sheet
Tier 2
PowerTech
1800 12.5 763 6 Seawater 283 380
6068S features
spec sheet
Tier 2
PowerTech
2800 6.8 415 6 Seawater 298 400
6125A features
spec sheet
Tier 2
PowerTech
1900 12.5 763 6 Aftercooled 298 400
6135S features
spec sheet
Tier 2
PowerTech
1800 13.5 824 6 Seawater 306 410
6090S features
spec sheet
Tier 2
PowerTech
2300 9 549 6 Seawater 317 425
6125S features
spec sheet
Tier 2
PowerTech
1900 12.5 763 6 Seawater 335 449
6125A features
spec sheet
Tier 2
PowerTech
2000 12.5 763 6 Aftercooled 339 455
6135S features
spec sheet
Tier 2
Powertech
1900 13.5 824 6 Seawater 362 485
6090S features
spec sheet
Tier 2
PowerTech
2400 9 549 6 Seawater 373 500
6125A features
spec sheet
Tier 2
PowerTech
2100 12.5 763 6 Aftercooled 392 526
6125S features
spec sheet
Tier 2
PowerTech
2000 12.5 763 6 Seawater 392 526
6135S features
spec sheet
Tier 2
PowerTech
2000 13.5 824 6 Seawater 421 565
6125S features
spec sheet
Tier 2
PowerTech
2100 12.5 763 6 Seawater 455 610
6135S features
spec sheet
Tier 2
PowerTech
2100 13.5 824 6 Seawater 485 650
6135S features
spec sheet
Tier 2
PowerTech
2200 13.5 824 6 Seawater 559 750
Marine Ratings for propulsion
M1 For propulsion applications that may operate up to 24 hours/day at uninterrupted full power. These applications typically operate over 3,000 hours/year and have load factors over 65%. The M1 rating is the ISO 8665 "standard power" rating and the SAE J1228 "crankshaft power" rating.
Possible Applications: Line haul tug and towboats, fish and shrimp trawlers/draggers, and displacement hull fishing boats over 60 ft (18 m).
M2 For propulsion applications that may utilize full power up to 16 out of each 24 hours of operation, with the remaining operation time at cruising speeds. These applications typically operate at full power up to 65% of the time and accumulate as many as 3,000 hours/year.
Possible Applications: Short range tugs and tow boats (pool boats), long-range ferryboats, large passenger vessels, and offshore displacement hull fishing boats under 60 ft (18 m) long.
M3 For propulsion applications that may utilize full power up to 4 out of each 12 hours of operation. These applications typically operate at full power up to 35% of the time and accumulate as many as 2,000 hours/year. The remaining time of operation must be at cruising speeds.
Possible Applications: Coastal fishing boats, offshore crew boats, research boats, short-range ferryboats, and dinner cruise boats.
M4 For propulsion applications that may utilize full power up to 1 out of each 12 hours of operation. The remaining time of operation must be at cruising speeds. These applications typically operate at full power up to 15% of the time and accumulate as many as 800 hours/year.
Possible Applications: Inshore crew boats, charter fishing boats, pilot boats, dive boats, and planing hull commercial fishing boats.
M5 For propulsion applications that may utilize full power up to 30 min. out of each 6 hours of operation. These applications typically operate at full power up to 8% of the time and accumulate as many as 300 hours/year.
Possible Applications: Recreational boats, tactical military vessels and rescue boats

Updated April 2010