Mercedes-Benz M104 engine
| M104 | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-Benz AG |
| Production | 1988–1999 |
| Layout | |
| Configuration | Straight-6 (Except M104.900, refer VW VR6) |
| Displacement | 2.8 L; 170.8 cu in (2,799 cc) M104.94x 3.0 L; 180.6 cu in (2,960 cc) M104.98x 3.2 L; 195.2 cu in (3,199 cc) M104.99x |
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves x cyl. with VVT |
| Compression ratio | 9.2:1, 10:1 and 10.5:1 on AMG models |
| Combustion | |
| Fuel system | Bosch KE-Jetronic (KE-CIS)
Bosch LH-Jetronic (LH-SFI) Bosch Motronic (HFM-SFI) |
| Management | Electronic |
| Fuel type | Gasoline |
| Oil system | Wet sump |
| Cooling system | Water cooled |
| Output | |
| Power output | 193–280 PS (142–206 kW; 190–276 hp) SAE |
| Torque output | 265–385 N⋅m (195–284 lb⋅ft) at 4600 rpm M104.98x |
| Chronology | |
| Predecessor | M 103 |
| Successor | M 112 |
The Mercedes-Benz M104 is an automobile straight-six engine produced from 1988 through 1999. It has a double overhead cam design with 4 valves per cylinder, and used a crossflow cylinder head. It replaced the M103 and was replaced by the M112 V6 starting in 1997. The bore spacing on all M104 engines is the same as M103 engines.