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.
| Exact capacity | 2996 cm³ |
| Power system | komora widłowa |
| Engine power | 109 - 113 HP |
| Torque | 185 - 191 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 87 mm |
| Piston stroke. | 84 mm |
| Compression ratio | 22 |
| Engine features | there is no |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 7.5 liters 5W-40 |
| Fuel type | diesel |
| Environmental class | EURO 1 |
| Approximate life expectancy | 450 000 HP |
| Exact capacity | 2996 cm³ |
| Power system | komora widłowa |
| Engine power | 143 - 150 HP |
| Torque | 267 - 273 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 87 mm |
| Piston stroke. | 84 mm |
| Compression ratio | 22 |
| Engine features | there is no |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | KKK K24 |
| What oils to use | 7.5 liters 5W-40 |
| Fuel type | diesel |
| Environmental class | EURO 1 |
| Approximate life expectancy | 400 000 HP |
| Exact capacity | 3449 cm³ |
| Power system | komora widłowa |
| Engine power | 136 - 150 HP |
| Torque | 305 - 310 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 92.4 mm |
| Piston stroke. | 89 mm |
| Compression ratio | 22 |
| Engine features | there is no |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | KKK K24 |
| What oils to use | 7.5 liters 5W-40 |
| Fuel type | diesel |
| Environmental class | EURO 1 |
| Approximate life expectancy | 400 000 HP |
| City | 9.3 litry |
| Route | 6.2 litry |
| Mixed | 7.9 litry |
The weight of the OM603 engine according to the catalog is 235 kg. The OM603 engine number is located at the front, at the junction with the cylinder head. This diesel unit is very prone to vibration, which affects the lifespan of its mounts. The timing chain lasts no more than 250,000 km, and if it breaks, the cylinder head will have to be replaced. The cylinder head gasket often fails due to cheap or old antifreeze, or even water. Hydraulic lifters are sensitive to low-quality oil and can start making noise before reaching 80,000 km. Other engine problems are usually related to the vacuum control system of the injection pump.
| E-Class W124 | 1984 - 1995 |
| G-Class W463 | 1990 - 1997 |
| S-Class W126 | 1985 - 1991 |
| S-Class W140 | 1992 - 1996 |
2.0 liter engine Mercedes OM640 or A-Class 2.0 CDI was produced from 2004 to 2012 and was only mounted in the second generation of A-Class and similar compact van class B. This propulsion system essentially replaced the popular diesel engine OM668 with a capacity of 1.7 liters. The R4 series includes: OM615 OM601 OM604 OM611 OM646 OM651 OM654
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
The 2.7-liter 5-cylinder inline engine Mercedes OM647 was produced from 2002 to 2005 and installed in the E-Class model with the W211 body, only in the pre-facelift version. This diesel engine is rarely found in our country and represents a true exclusivity. The R5 engine line also includes the following diesel engines: OM617, OM602, OM605, and OM612.
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.
The 1.6-liter Nissan SR16VE engine was produced from 1997 to 2000 at the factory in Japan and used in sport versions of popular models such as Pulsar, Lucino, and Sunny. In addition to the standard version, there was also an N1 version from Autech for the Pulsar model from 1997-1998. The SR engine family also includes the following engines: SR18DE, SR20DE, SR20DET, SR20VE, and SR20VET.