Engine Mercedes OM421

Engine Mercedes OM421

Mercedes OM421 engines reach 216 hp. (159 kW). The working area of ​​these motors is 11 liters. These are 6-cylinder engines with 12 valves, which, at low operating costs, provide sufficient power for an average load.

A distinctive feature of the Mercedes OM 421 engines is that they achieve high performance at low revs. These units are equipped with a turbocharging system, which allows them to increase their power with relatively small cylinder volumes. The cylinders are V-shaped in them. Prechamber fuel injection is carried out by a mechanical injection pump.


Engine’s type diesel
Also called OM 421
Production years 10.1981
End of release 02.1993
Power output, hp / kW 213 / 159 at 2300 rpm
Displacement, cc 10964
Number of cylinders 6
Valves 12
Torque output, Nm / rpm 1200
Compression ratio (compression) 16.9:1
Cylinder bore, mm 128
Piston stroke, mm 142
Crankshaft bearings 4
Configuration V
Fuel type diesel
Fuel system inline injection pump
Cylinder head OHV
Timing mechanism spur gear
Timing rocker arm
Cooling water

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