Mercedes-Benz OM612 engine

The Mercedes-Benz OM612 engine is a straight-5 diesel engine produced by Mercedes-Benz.

Mercedes-Benz OM612 Engine
Overview
ManufacturerMercedes-Benz
Production1999–2006
Layout
ConfigurationStraight-5
Displacement2.7 L; 163.8 cu in (2,685 cc) 3.0 L; 180.0 cu in (2,950 cc)
Cylinder bore88 mm (3.46 in)
Piston stroke88.3–97 mm (3.48–3.82 in)
ValvetrainDOHC 20 valves
Combustion
TurbochargerYes
Fuel systemCommon rail direct injection
Fuel typeDiesel
Cooling systemWater-cooled
Output
Power output115–170 kW (156–231 PS; 154–228 hp)
Torque output330–540 N⋅m (243–398 lb⋅ft)
Chronology
PredecessorMercedes-Benz OM605 engine
SuccessorMercedes-Benz OM647 Engine

It was introduced in 1999 for the 2000 model year in a 170 PS (125 kW; 168 hp) version in the W210 E-Class, W163 ML-Class, W203 C-Class and W209 CLK-Class in 2000. Also used in the Austrian built Jeep WJ Grand Cherokee (ENF in Jeep catalogs), equivalent to the petrol WJ.

A detuned version with 156 PS (115 kW; 154 hp) was used in the W90x Sprinter from 2000 to 2006, and in some versions of the military G-Wagen.

The OM612 DE 30 LA is a 2950 cc version with 231 PS (170 kW; 228 hp), developed by Mercedes-AMG, was used in the C 30 CDI AMG versions of the W203 C-Class. This remains the only diesel-powered AMG vehicle to date.

The OM612 was a 5-cylinder version of the OM611. A six-cylinder OM613 was also produced.

Technical specifications

Power Torque Applications
156 PS (115 kW; 154 hp)
@ 3800 rpm
330 N⋅m (243 lb⋅ft)
@ 1400–2400 rpm
2000 W90x Sprinter and W463 G 270 CDI
163 PS (120 kW; 161 hp)
@ 4200 rpm
370 N⋅m (273 lb⋅ft)
@ 1600–2800 rpm
1999 W210 E-Class and 2000 W203 C-Class for Belgium
170 PS (125 kW; 168 hp)
@ 4200 rpm
370 N⋅m (273 lb⋅ft)
@ 1600–2800 rpm
1999 W210 E-Class and 2000 W203 C-Class for others than Belgium
231 PS (170 kW; 228 hp)
@ 3800 rpm
540 N⋅m (398 lb⋅ft)
@ 2000 rpm
2002-2004 Mercedes-Benz C30 CDI AMG


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