Mercedes OM612 engine
Content
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 R5 range also includes diesels: OM617, OM602, OM605 and OM647.
Technical characteristics of the engine Mercedes OM612 2.7 CDI
| Exact volume | 2685 cm³ |
| Supply system | Common Rail |
| Internal combustion engine power | 156 - 170 HP |
| Torque | 330 - 400 Nm |
| Cylinder block | cast iron R5 |
| Block head | aluminum 20v |
| Bore | 88 mm |
| Piston stroke | 88.3 mm |
| Compression ratio | 18 |
| Features of the internal combustion engine | no |
| Hydraulic compensators | Yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | Yes |
| What kind of oil to pour | 7.5 liters 5W-30 |
| fuel type | diesel |
| Environmental class | EURO 3/4 |
| Approximate resource | 350 000 km |
The weight of the OM612 motor according to the catalog is 215 kg
Engine number OM612 is located on the cylinder block
Fuel consumption of internal combustion engine Mercedes OM 612
On the example of a 270 Mercedes C2002 CDI with a manual transmission:
| City | 9.7 liters |
| Track | 5.1 liters |
| Mixed | 6.8 liters |
Which cars were equipped with the OM612 2.7 l engine
| C-Class W203 | 2000 – 2007 |
| CLK-Class C209 | 2002 – 2005 |
| E Class W210 | 1999 – 2003 |
| ML-Class W163 | 1999 – 2005 |
| G-Class W463 | 2002 – 2006 |
| Sprinter W901 | 2000 – 2006 |
| Grand Cherokee 2 (WJ) | 2002 – 2004 |
Disadvantages, breakdowns and problems of OM612
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 burns 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.
