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John Deere 6068SFM85 Marine Propulsion Engine

Model Photo

6068SFM85

  • 6.8L PowerTech™
  • 186-298 kW (249-400 hp)

 

Features

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.

High-pressure common-rail (HPCR)

  • The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures. It also controls fuel injection timing and provides precise control for the start, duration, and end of injection. Electronic transfer pump is self-priming for ease of maintenance. Provides high performance, excellent fuel economy, and low emissions.

Water-cooled exhaust manifold

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

Turbocharged with air-to-seawater aftercooling

  • Cooler turbocharger operation enables higher ratings and efficiencies for applications that require high power or speed.

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.

Heat exchanger

  • High-capacity heat exchanger provides reliable operation in adverse conditions.

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 6068SFM85
Number of cylinders 6
Displacement-- L (cu in) 6.8 (415)
Bore and Stroke-- mm (in) 106 x 127 (4.17 x 5.00)
Engine Type In-line, 4- Cycle
Aspiration Air-to-sea water
Length - mm (in) 1489 (58.6)
Width Maximum - mm (in) 872 (34.3)
Height - mm (in) 931 (36.7)
Height, crankshaft centerline to top - mm (in) 640 (25.2)
Height, crankshaft centerline to bottom - mm (in) 291 (11.5)
Weight, dry - kg (lb) 763 (1682)

Engine Specifications

Performance Rating Power KW (bhp)
Rated Speed (rpm)
Rated fuel consumption L/hr(gal/hr)
M1 186 ( 249 )
2400
51.1 ( 13.5 )
M2 209 ( 280 )
2500
56.7 ( 15.0 )
M3 239 ( 321 )
2600
63.3 ( 16.7 )
M4 265 ( 355 )
2700
69.3 ( 18.3 )
M5 298 ( 400 )
2800
81.3 ( 21.5 )

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%
M5 - Typical annual usage (hr) 000 hr
M5 - Typical full-power operation (hr) 0.5 of each 8 hr
M5 - Typical load factor <=35%