Mercedes OM612 engine

The 2.7-liter 5-cylinder inline engine of the Mercedes OM612 was produced from 1999 to 2007 and installed in popular models of the company such as the W203, W210, W163, and Gelandewagen. There was also an AMG version of this diesel engine with a capacity of 3.0 liters and a power output of 230 hp. In the R5 engine lineup, there are also diesel engines: OM617, OM602, OM605, and OM647.

Here are the technical specifications of the Mercedes OM612 2.7 CDI engine.

OM 612 DE 27 LA or 270 CDI
Exact capacity2685 cm³
Power systemCommon Rail
Engine power156 - 170 HP
Torque330 - 400 nm
Engine blockcast iron R5
Block headaluminum 20v
Cylinder diameter88 mm
Piston stroke.88.3 mm
Compression ratio18
Engine featuresthere is no
Hydraulic compensator. tak
Timing drivechain
Timing phase adjusterthere is no
Turbochargingtak
What oils to use7.5 liters 5W-30
Fuel typediesel
Environmental classEURO 3/4
Approximate life expectancy350 000 HP

Fuel consumption Mercedes OM612 engine

Using the example of a 2002 Mercedes C270 CDI with a manual gearbox:
City9.7 litry
Route5.1 litry
Mixed6.8 litry

Engine Overview and Common Failures

The weight of the OM612 engine according to the catalog is 215 kg. The engine number OM612 can be found on the cylinder block. One problem with 5-cylinder diesel engines of this series is increased wear of the camshafts. The timing chain does not last long either, its lifespan is approximately 200-250 thousand km. Electrical issues often occur with the wiring of the injectors and the boost pressure sensor. The injectors quickly get coked up if the heat-resistant washers are not replaced during their disassembly. All other failures of this engine are related to the Common Rail fuel system.

Engine Mercedes Om612

Mercedes
C-Class W2032000 - 2007
CLK-Class C2092002 - 2005
E-Class W2101999 - 2003
ML-Class W1631999 - 2005
G-Class W4632002 - 2006
Sprinter W9012000 - 2006
Jeep
Grand Cherokee 2 (WJ)2002 - 2004

Engines from the same line as Mercedes OM612 engine

See Also

Mercedes OM646 engine

The 2.2-liter diesel engine Mercedes OM 646 was produced from 2002 to 2010 and installed in the C-Class, CLK-Class, E-Class models, as well as in Vito and Sprinter minibuses. There was a version of this engine with a transverse arrangement, the OM 644, for the Chrysler PT Cruiser. The R4 engine lineup includes: OM616 OM601 OM604 OM611 OM640 OM651 OM654 OM668

Mercedes Engine OM651

The range of Mercedes OM651 diesel engines with a capacity of 1.8 and 2.2 liters has been produced since 2008 and installed in many modern models of the German company, including commercial vehicles. This powertrain is available in a huge number of different versions and modifications. The R4 family includes: OM616 OM601 OM604 OM611 OM640 OM646 OM654 OM668

Mercedes engine Om 605

The 2.5-liter, 5-cylinder inline engine Mercedes OM 605 was produced from 1993 to 2001 and was installed in several popular models of the company, such as the W124, W202, W210. This powertrain was offered in a naturally aspirated version with 113 HP and a turbocharged version with 150 HP. The inline R5 engine lineup also includes diesel engines: OM617, OM602, OM612, and OM647.

Mercedes engine Om 603

Mercedes OM603 6-cylinder engines with a capacity of 3.0 and 3.5 liters were produced from 1984 to 1997 and installed in many popular models of the German company, such as W124, W126, and W140. There were three versions of this diesel engine available: one naturally aspirated and two with turbocharging. The R6 engine line also includes diesel units: OM606, OM613, OM648, and OM656.

Alfa Romeo engine 937a1000

The 2.0-liter engine 937A1000 or Alfa Romeo 156 2.0 JTS was produced from 2002 to 2010 and installed in popular models of the brand, such as 156, GT, GTV, and the similar Spider. This engine is actually a modification of the Twin Spark engine with direct fuel injection. The JTS engine series also includes: 939A5000 and 939A000.

Jaguar AJ20 engine

The 2.1-liter Jaguar AJ20 petrol engine was produced by the company from 2001 to 2008 and was installed in the smallest model, the X-Type, but it was only available in certain markets. This is the only engine in the series that does not have an equivalent in the Duratec V6 family. The AJ-V6 series also includes the engines: AJ25 and AJ30.