Back Mercedes-Benz OM604-enjin Afrikaans Mercedes-Benz OM 604/OM 605/OM 606 Danish Mercedes-Benz OM 604/OM 605/OM 606 German Mercedes-Benz OM604 Italian Mercedes-Benz OM604 Russian
 | This article needs additional citations for verification. (January 2022) |
| Mercedes-Benz OM604 engine | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 1993–1998 |
| Layout | |
| Configuration | Naturally aspirated Straight-4 |
| Displacement | 2.0 L (1,997 cc) 2.2 L (2,155 cc) |
| Cylinder bore | 89 mm (3.50 in) 87 mm (3.43 in) |
| Piston stroke | 86.6 mm (3.41 in) 84 mm (3.31 in) |
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminum |
| Valvetrain | DOHC / 4 valves x cyl. |
| Compression ratio | 22.0:1 |
| Combustion | |
| Fuel system | Indirect injection |
| Management | Lucas EPIC |
| Fuel type | Diesel |
| Oil system | Wet sump |
| Cooling system | Water cooled |
| Output | |
| Power output | 55–70 kW (75–95 PS; 74–94 hp) |
| Torque output | 135–150 N⋅m (100–111 lb⋅ft) |
| Chronology | |
| Predecessor | Mercedes-Benz OM601 engine |
| Successor | Mercedes-Benz OM611 engine |
The Mercedes-Benz OM604 is a 2.0 litres (1,997 cc) and 2.2 litres (2,155 cc) inline-four cylinder (R4/I4) double overhead camshaft (DOHC) diesel engine with indirect injection manufactured by Mercedes-Benz between 1993 and 1998.[1] It replaced the single overhead camshaft (SOHC) OM601 engine. Unlike other Mercedes Benz diesels at the time that used a Bosch inline injection pump the OM604 used the Lucas electronically controlled rotary distributor injection pump (EVE) which is less reliable. The seals of the Lucas injection pumps become brittle over time and leak, a seal kit is available
It is related to the straight-5 2.5 litre OM605 and the straight-6 3.0 litre OM606 engines.
- ^ "Engine specifications for Mercedes OM604, characteristics, oil, performance". Retrieved 2022-12-07.