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John Deere 6135AFM85 Marine Propulsion Engine

Model Photo


  • 13.5L PowerTech™
  • 272-429 kW (365-575 hp)



High torque and low rated RPM

  • High torque provides excellent vessel control and maneuverability. Lower rated propulsion RPM reduces vibration and noise for improved crew comfort.

4-valve cylinder head

  • Excellent airflow through 4-valve cylinder head delivers greater low-speed torque and better transient response time.

Electronic unit injectors (EUI)

  • The EUI fuel system provides higher injection pressures. It also controls fuel injection timing and provides precise control for start, duration, and end of injection.

Water-cooled exhaust manifold

  • Integrated components eliminate external hoses and fittings. Wet exhaust manifold creates a cooler and quieter environment for passengers and crew.

Replaceable cylinder liners

  • Replaceable wet-type cylinder liners are precision-machined and hardened for long life. Allows engine to be rebuilt to original specifications.

Electronic engine control unit (ECU)

  • Advanced fault code diagnostics and customizable engine protections ensure reliability and uptime. Provides highly customizable features and trim to integrate your vessel.

Keel-cooled or heat exchanger

  • Closed cooling system in keel-cooled engine option eliminates the need for a sea strainer, seawater pump, or anodes. Heat exchanger option offers a lighter, more compact, and simpler engine installation.

Multiple service options

  • Either-side oil fill/dipstick combinations and remote oil and fuel filter options are available for easier service access.

Emissions Certifications

IMO Tier 2  
EPA Tier 3  
RCD 2  

General Data (based on standard option configuration)

Model 6135AFM85
Number of cylinders 6
Displacement-- L (cu in) 13.5 (824)
Bore and Stroke-- mm (in) 132 x 165 (5.20 x 6.50)
Engine Type In-line, 4- Cycle
Aspiration Turbocharged and air-to-coolant aftercooled
Length - mm (in) 1801 (70.9)
Width Maximum - mm (in) 1062 (41.8)
Height - mm (in) 1266 (49.8)
Height, crankshaft centerline to top - mm (in) 902 (35.5)
Height, crankshaft centerline to bottom - mm (in) 364 (14.3)
Weight, dry - kg (lb) 1410 (3109)

Engine Specifications

Performance Rating Power KW (bhp)
Rated Speed (rpm)
Rated fuel consumption L/hr(gal/hr)
M1 272 ( 365 )
76.7 ( 20.3 )
M2 317 ( 425 )
86.2 ( 22.8 )
M3 373 ( 500 )
102.2 ( 27.0 )
M4 429 ( 575 )
118.8 ( 31.4 )

M rating

M1 - Typical annual usage (hr) Unrestricted
M1 - Typical full-power operation (hr) Uninterrupted
M1 - Typical load factor >65%
M2 - Typical annual usage (hr) 000-5
M2 - Typical full-power operation (hr) 16 of each 24 hr
M2 - Typical load factor <=65%
M3 - Typical annual usage (hr) 000-4
M3 - Typical full-power operation (hr) 4 of each 12 hr
M3 - Typical load factor <=50%
M4 - Typical annual usage (hr) 000-3
M4 - Typical full-power operation (hr) 1 of each 12 hr
M4 - Typical load factor <=40%