Mercedes-Benz and SsangYong Motors collaborated on the OM661 engine. It has a split combustion chamber, four cylinders, and a 2.3-liter working capacity. Cars like SsangYong Musso (Tagaz Partner), SsangYong Korando (Tagaz Tager), and some Mercedes models were fitted with engines from the 661 series.
The only distinction between this engine and the OM662 engine is that the OM662 has a different fuel system while the OM661 does not have a fifth cylinder. SsangYong (OM661 Mercedes) motors are more dependable, efficient, and simple to maintain.
Specifications
| Engine’s type | diesel |
| Power, hp / kW | 77-79 / 57-58 at 2100 rpm |
| Displacement, cc | 2152-2299 |
| Number of cylinders | 4 |
| Number of valves | 8 |
| Compression ratio | 21:1 |
| Cylinder bore, mm | 89 |
| Piston stroke, mm | 92.4 |
| Crankshaft bearings | 5 |
| Configuration | inline |
| Fuel type | diesel fuel |
| Combustible mixture supply | split combustion engine |
| Turbine | suction pump |
| Cylinder head | SOHC/OHC |
| Timing mechanism | chain |
| Cooling | water |
Modifications:
- OM 661.911 Engine (4-cylinder, 2299 cc), 2 valves per cylinder, 92.4 stroke, 89 bore, 58 kW (79 hp) For Mercedes-Benz Sprinter models 208 D 2.3,
- Sprinter 308 D 2.3, Sprinter 408 D 2.3, Vito 108 D 2.3, T1 – 208 D 2.3, T1 – 308 D 2.3, T2 / LN1 – 508 D, T1 / TN – 408 D, Korando 2.3.
- OM 661.940 engine (4 cylinders, 2299 cc), 2 valves per cylinder, 92.4 stroke, bore 89, 58 kW (79 hp)
- OM 661.960 engine (4 cylinders, 2152 cc), 2 valves per cylinder, 92 kW (125 hp)