Engine Mercedes OM612

The 2.7-liter 5-cylinder in-line Mercedes OM612 engine was produced from 1999 to 2007 and installed on such popular concern models as the W203, W210, W163 and Gelendvagen. There was an AMG version of this diesel unit with a volume of 3.0 liters and a power of 230 hp.

The diesel R5-family includes: OM617, OM602, OM605, OM612, OM647.

Specifications

Production years 1999-2007
Displacement, cc 2685
Fuel system Common Rail
Power output, hp 156 – 170
Torque output, Nm 330 – 400
Cylinder block cast iron R5
Block head aluminum 20v
Cylinder bore, mm 88
Piston stroke, mm 88.3
Compression ratio 18.0
Features no
Hydraulic lifters yes
Timing drive chain
Phase regulator no
Turbocharging yes
Recommended engine oil 5W-30
Engine oil capacity, liter 7.5
Fuel type diesel
Euro standards EURO 3/4
Fuel consumption, L/100 km (for Mercedes C270 CDI 2002)
— city
— highway
— combined
9.7
5.1
6.8
Engine lifespan, km ~350 000
Weight, kg 215

The engine was installed on:

  • Mercedes C-Class W203 in 2000 – 2007;
  • Mercedes CLK-Class C209 in 2002 – 2005;
  • Mercedes E-Class W210 in 1999 – 2003;
  • Mercedes G-Class W463 in 2002 – 2006;
  • Mercedes ML-Class W163 in 1999 – 2005;
  • Mercedes Sprinter W901 in 2000 – 2006;
  • Jeep Grand Cherokee 2 (WJ) in 2002 – 2004.

Disadvantages of the OM612 engine

  • The problem with 5-cylinder diesel engines of the series is increased camshaft wear.
  • The timing chain also serves here for a short time, its resource is approximately 200 – 250 thousand km.
  • Electrically, the wiring of the injectors and the boost pressure sensor often burn out here.
  • Nozzles quickly coke if the refractory washers are not replaced when dismantling them.
  • All remaining breakdowns of this engine are associated with Common Rail fuel equipment.

Modification OM 612 DE 27 LA: 5-cylinder, 2685 cm3, bore and stroke 88 and 88.3 mm, respectively, generation CDI II generation.

Car model Power at (rpm) Torque output at (rpm)
Sprinter 216 CDI, 316 CDI,
416 CDI, 616 CDI (W 901-905)
115 kW (156 hp) at 3800 330 Nm at 1400-2400
G 270 CDI (W 463) 115 kW (156 hp) at 3800 400 Nm in 1800-2400
ML 270 CDI (W 163) 120 kW (163 hp) at 4200 370 Nm at 1600-2800 with MT
400 Nm at 1800-2600 with AT
C 270 CDI (W / S 203) 125 kW (170 hp) at 4200 370 Nm at 1600-2800 with MT
400 Nm at 1800-2600 with AT
400 Nm in 1800-2800
CLK 270 CDI (C 209) 125 kW (170 hp) at 4200 400 Nm at 1800-2800 with MT
400 Nm at 1800-2600 with AT
E 270 CDI (W / S / VF 210) 125 kW (170 hp) at 4200 370 Nm at 1600-2800 with MT
400 Nm at 1800-2800 with AT

Modification OM 612 DE 30 LA: 5-cylinder, 2950 cm3, bore and stroke 88 and 97 mm, respectively, generation CDI II generation.

Car model Power at (rpm) Torque at (rpm)
C 30 CDI AMG (W / S / CL 203) 170 kW (231 hp) @ 3800 540 Nm @ 2000

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