The 4-valve cylinder head, with U-flow head design, provides excellent airflow resulting in greater low-speed torque and better transient response.
High-pressure common-rail (HPCR) and engine control unit (ECU)
The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures, up to 1600 bar (23,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of the injection.
Cooled exhaust gas recirculation (EGR)
EGR cools and mixes measured amounts of cooled exhaust gas with incoming fresh air to lower peak combustion temperatures, thereby reducing NOx.
Variable geometry turbocharger (VGT)
Varies exhaust pressure based on load and speed to ensure proper EGR flow; greater low-speed torque, quicker transient response, higher peak torque, and best-in-class fuel economy.
Air-to-air aftercooled
An efficient method of cooling intake air to help reduce engine emissions while maintaining low-speed torque, transient response time, and peak torque. It enables an engine to meet emissions regulations with better fuel economy and the lowest installed costs.
Photos
Highlights
Phoenix, Arizona
2024
John Deere Engine & Drivetrains
Marine Engines 6090HF485 Variable Speed
Model: 6090HF485
1986 lb (901 kg)
Available
24.8 in (630 mm)
43.8 in (1113 mm)
Specifications
2024
John Deere Engine & Drivetrains
Marine Engines
6090HF485 Variable Speed
General
Model: 6090HF485
6
549 cu in (9 L)
4.66 in (118.4 mm)
5.35 in (136.0 mm)
16.0 : 1
In-line, 4-cycle
Turbocharged and air-to-air aftercooled
Intermittent - Rated: 375 hp (280 kW) @2200 rpm | Intermittent - Peak: 375 hp (280 kW) @2200 rpm | Intermittent - Power bulge: 0 %