Engine Mercedes OM403

The Mercedes OM403 is a V-shaped engine with ten cylinders. This device was primarily installed on trucks and was created in the early 1970s.

This model’s engine has a unique modular layout that lowers the engines’ prime cost. The Mercedes OM403 engine uses regular water as a coolant, which reduces operating costs but also raises the possibility of issues and malfunctions related to the impact of water on engine components.

With a working area of 15.9 liters, Mercedes OM 403 10-cylinder engines can produce 320 horsepower (235 kW). There are two valves on each cylinder. These motors are very dependable and efficient.

Specifications

Engine’s type	diesel
Also called	OM 403
Production years	05/1974
End of release	09/1983
Power output, hp / kW	320 / 235 at 2500 rpm
Displacement, cc	15900
Number of cylinders	10
Valves	20
Torque output, Nm / rpm	1600
Compression ratio (compression)	17.2:1
Cylinder bore, mm	125
Piston stroke, mm	130
Crankshaft bearings	6
Configuration	V
Fuel type	diesel
Fuel system	inline injection pump
Cylinder head	OHV
Timing mechanism	spur gear
Timing	rocker arm
Cooling	water

The Mercedes OM 403 engines are versatile in terms of gearbox compatibility due to their high power at low revs.

There are numerous uses for the motors themselves. These include trucks, municipal vehicles (like garbage trucks), and construction loaders. In addition, the OM403 works flawlessly with a variety of chassis, axles, and braking systems.

Engine Modifications

1. OM 403.900 with 184 kW (250 HP);
2. OM 403.905 with 236 kW (320 HP). Issue 9/1970 – 5/1975. For models MB 1932, 1632, 2232, 2032;
3. OM 403.906 with 184 kW (250 HP). Issue 1/1969 – 4/1972. For models MB F 193, F 263, F 463;
4. OM 403.910 with a capacity of 184-236 kW (250-320 hp). For MB Comfort class 400 – S211, 400 – S215;
5. OM 403.911;
6. OM 403.915 with 236 kW (320 HP). Issue 1/1972 – 12/1975. For models MB 1932, 1632, 2232, 2032;
7. OM 403.916 with 236 kW (320 HP). Issue 5/1974 – 9/1983. For models MB 1932, 2632, 1632;
8. OM 403.917 with 236 kW (320 HP). Issue 4/1972 – 12/1974. For models MB F 130, F 193, F 263;
9. OM 403.918 with 236 kW (320 HP). Issue 7/1975 – 6/1983. For models MB O 303 – O 303;
10. OM 403.919 with 236 kW (320 HP). Issue 4/1972 – 12/1974. For models MB F 130, F 193, F 263;
11. OM 403.930 with 236 kW (320 HP). Issue 4/1972 – 12/1974. For models MB F 130, F 193, F 263;
12. OM 403.931 with 236 kW (320 HP). Issue 8/1973 – 9/1983. For models MB 1932, 2632, 1632, 2232;
13. OM 403.932 with 236 kW (320 HP). Issue 5/1974 – 9/1983. For models MB 1932, 2632, 1632, 2232, 2032;
14. OM 403.933 with 261 kW (355 HP). Issue 8/1973 – 9/1983. For MB 2632;
15. OM 403.934 with 236 kW (320 HP). Issue 4/1972 – 12/1985. For models MB 1932, 1632, 2232;
16. OM 403.935 with 261 kW (355 HP). Issue 8/1973 – 9/1983. For models MB 1932, 1632, 2232.