6068A

PowerTech™ 6.8L Marine Engine

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 seawater after cooling. 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.
Find more information on the key features of the product below:

HIGH-PRESSURE COMMON RAIL FUEL SYSTEM

Variable injection pressure and timing control

JOHN DEERE ELECTRONIC CONTROLS
Built in controls eliminates the need for costly add on engine warning systems and associated components stored for later retrieval and ease of diagnostics
Built in engine synchronization feature

WATERCOOLED TURBOCHARGER AND EXHAUST MANIFOLD
Cooler and quieter environment for vessel and crew
Reduced external connection eliminates hoses and fittings that can leak or break

REPLACEABLE WET-TYPE CYLINDER LINERS
Hardened and precision machined for long life
Rebuild to original specifications

HIGH TORQUE AND LOW RATED RPM
Excellent vessel control and manoeuvring
Lower rated rpm limits vibration and noise

COOLING SYSTEM
High-capacity heat exchanger designed for reliable operation in adverse conditions
Available as keel cooled

ADDITIONAL FEATURES
Either side service
Optional auxiliary drive

APPLICATIONS
Generator drive engines, propulsion, and auxiliary

Product features are based on published information at the time of publication. Product features are subject to change without notice. Contact your local John Deere dealer or Power Equipment for more information.

Specifications

High-Pressure Common Rail Fuel System
John Deere Electronic Controls
Watercooled Turbocharger and Exhaust Manifold
Replaceable Wet-Type Cylinder Liners

Rated speed (rpm) 2400-2600
Number of cylinders 6
Engine Type In-line, 4 Cycle
Bore and stroke (mm,mm) 107 x 127


Customer Reviews

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Laura Peregrin Thwaites Marine Owner

I have a background in diving and marine science. Before getting in business, I spent years on boats either doing research or teaching people to dive. When I met my husband Ben, he introduced me to all the technical aspects of boating: engines and hulls. We share a passion for the ocean and now we enjoy boating, sailing and surfing as a family of four.

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