| Mercedes-Benz OM648 | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 2002-2006 |
| Layout | |
| Configuration | Inline 6 |
| Displacement | 3.2 L (3,222 cc) |
| Cylinder bore | 88 mm (3.46 in) |
| Piston stroke | 88.3 mm (3.48 in) [1] |
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminum |
| Valvetrain | DOHC 4 valves x cyl. |
| Combustion | |
| Turbocharger | Single variable nozzle |
| Fuel system | common rail fuel injection |
| Fuel type | Diesel |
| Oil system | Wet sump |
| Cooling system | Water cooled |
| Output | |
| Power output | 204 PS (150 kW; 201 hp) |
| Specific power | 63.3 PS (46.6 kW; 62.4 hp) per litre |
| Torque output | 500 N⋅m (369 lb⋅ft) |
| Chronology | |
| Predecessor | OM613 |
| Successor | OM642 |
The Mercedes-Benz OM648 engine is a 3.2 Litre, straight-6 4 valves per cylinder, cast iron block diesel engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the previous Mercedes-Benz inline-5 and -6 engines.
The engine features common rail fuel injection and a variable nozzle turbocharger. The injection system operates at 1,600 bar (23,000 psi).
Power output is 204 PS (150 kW; 201 hp) at 4200 rpm and 500 N⋅m (369 lb⋅ft) of torque from 1,800 to 2,600 rpm.
Mercedes claims this engine will propel the E320 CDI to 60 mph (97 km/h) in 6.6 seconds. All while managing 27 mpg‑US (8.7 L/100 km; 32 mpg‑imp)+ city and 37 mpg‑US (6.4 L/100 km; 44 mpg‑imp)+ Highway[citation needed]
Oil specification MB 229.31 or MB 228.31 is recommended and has a service interval of 13,000 miles (21,000 km) using the specified oil.[citation needed]
OM648 is the successor to the OM613.