The Mercedes-Benz OM904 is a 4.2 liter (4,249cc) Inline-four engine (I4) OHV Diesel engine with 3 valves per cylinder.[1] It is related to the OM906 Straight-six engine which has two extra cylinders, while the bore and stroke remain unchanged.[2]
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 ~0.5-1.4atm of boost.[3]
| Power: | 75-130kW (101-174hp) @ 2,200 rpm | Height: | 930mm (36.6in) |
|---|---|---|---|
| Torque: | 400-670Nm (295-494lb.ft) @ 1,200-1,600 rpm | Weight: | 405kg (893lbs) |
| Aspiration: | Twin-scroll turbocharger, intercooler | Injection: | Direct injection |
| Compression Ratio: | 18:1 | Boost: | 0.5-1.4atm |
| Bore: | 102mm (4in) | Launch Year: | 1996 |
| Stroke: | 130mm (5.1in) | ||
| Displacement: | 4,249cc (259.3CI) | ||
| Redline: | 2,300 | ||
| Length: | 944mm (37.2in) | ||
| Width: | 610mm (24in) |