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9.0L PowerTech™

6090HF485 Variable Speed

The John Deere 6090HF485 is designed for marine operators who require strong torque, responsive performance, and dependable auxiliary power. Delivering 375 horsepower from its proven 9.0L PowerTech™ Plus platform, this turbocharged and aftercooled diesel engine is well suited for hydraulic systems, pumps, deck equipment, and other variable-speed marine applications.

Built to perform under changing loads and demanding operating conditions, the 6090HF485 combines advanced fuel management, variable geometry turbocharging, and electronic engine controls to optimize efficiency and engine response. With a best-in-class horsepower-to-displacement ratio, long service intervals, and rugged construction, it provides reliable performance for commercial fishing vessels, passenger vessels, workboats, and government fleets.

Features & Benefits

Variable Geometry Turbocharger

Automatically adjusts boost pressure based on engine speed and load to deliver exceptional low-speed torque and fast response.

High-Pressure Common Rail Fuel System

Advanced fuel injection technology improves efficiency, power delivery, and overall engine performance.

Advanced Electronic Controls

Integrated diagnostics and engine protection systems help maximize uptime and simplify maintenance.

High-Torque Performance

Produces up to 1,589 Nm (1,172 ft-lb) of torque, providing dependable power for demanding auxiliary equipment.