Mercedes-Benz OM906 engine

The Mercedes-Benz OM906 or Mitsubishi 6S20 is a 6.4 liter (6,374cc) Straight-6 (I6) OHV Diesel engine with 3 valves per cylinder.[1][2] It is related to the Straight-4 OM904 engine which has two cylinders chopped off, while the bore and stroke remain unchanged.[3]

It launched in 1996 and had a Unit injector system to deliver fuel to every cylinder. It used a twin-scroll Turbocharger that was giving ~1-1.6atm of boost.[4]

This engine is also used by Mitsubishi Fuso as 6S20, installed on Mitsubishi Fuso FJ series which is in turn a rebadged version of Mercedes Benz Axor produced by Bharatbenz in India.[5]

Engine Details
Power: 170-210kW (228-282hp) @ 2,200 rpm Height: 930mm (36.6in)
Torque: 810-1150Nm (597-848lb.ft) @ 1,200-1,600 rpm Weight: 540kg (1,190lbs)
Aspiration: Twin-scroll turbocharger, intercooler Injection: Direct injection
Compression Ratio: 18:1 Boost: 1-1.6atm
Bore: 102mm (4in) Launch Year: 1996
Stroke: 130mm (5.1in)
Displacement: 6,374cc (389CI)
Redline: 2,300 rpm
Length: 1,228mm (48.3in)
Width: 640mm (25.2in)
  1. ^ "Diesel Engine OM 906". www.idem.ir. Retrieved 2019-09-13.
  2. ^ "Table 1 Technical data of Mercedes-Benz engine OM 906 LA". ResearchGate. Retrieved 2019-10-02.
  3. ^ "Mercedes OM904 - OM906 engine specs, bolt torques, manuals". barringtondieselclub.co.za. Retrieved 2019-09-13.
  4. ^ "The history of medium-duty engines at Mercedes-Benz". www.fleetnews.co.uk. Retrieved 2019-09-14.
  5. ^ "Driven: the Fuso FJ18-280S - Expert Fuso FJ18-280S Commercial Vehicle Reviews". www.autotrader.co.za. Retrieved 2022-07-09.