D8 D8 D8 D8 Performance Crankshaft power 331 kW/450 hp 374 kW/509 hp 405 kW/550 hp 441 kW/600 hp Performance Rating 3 4 4 Performance Fuel Type Diesel Diesel Diesel Diesel Performance Displacement litres 7.7 litres 7.7 litres 7.7 litres 7.7 litres Performance Displacement cui 470 in³ 470 in³ 470 in³ 470 in³ Performance Number of Cylinders 6 6 6 6 Performance Control System Electronic Vessel Control Electronic Vessel Control Electronic Vessel Control Electronic Vessel Control Performance High-pressure fuel injection Common-rail fuel injection Common-rail fuel injection Common-rail fuel injection Common-rail fuel injection Performance Aspiration Twin entry turbo and compressor with charge air cooler Twin entry turbo and compressor with charge air cooler Twin entry turbo and compressor with charge air cooler Twin entry turbo and compressor with charge air cooler Details Cooling System Heat Exchanger Cooling Heat Exchanger Cooling Heat Exchanger Cooling Heat Exchanger Cooling Details Product Series 8 liter series 8 liter series 8 liter series 8 liter series