The 2.4-liter diesel engine BMW M21 or M21D24 was produced from 1983 to 1991 and installed in popular models of the company: 3-Series (E30) and 5-Series (E28 and E34). This engine was available in both naturally aspirated and turbocharged versions. The R6 engine line also includes units: M51, M57, N57, and B57.
| Exact capacity | 2443 cm³ |
| Power system | swirl chamber |
| Engine power | 86 HP |
| Torque | 152 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 80 mm |
| Piston stroke. | 81 mm |
| Compression ratio | 22 |
| Engine features | there is no |
| Hydraulic compensator. | there is no |
| Timing drive | strip |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 5.5 liters 5W-40 |
| Fuel type | diesel |
| Environmental class | EURO 0 |
| Approximate life expectancy | 350 000 HP |
| Exact capacity | 2443 cm³ |
| Power system | swirl chamber |
| Engine power | 115 HP |
| Torque | 210 - 220 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 80 mm |
| Piston stroke. | 81 mm |
| Compression ratio | 22 |
| Engine features | there is no |
| Hydraulic compensator. | there is no |
| Timing drive | belt |
| Timing phase adjuster | there is no |
| Turbocharging | Garrett T3 |
| What oils to use | 5.75 liters 5W-40 |
| Fuel type | diesel |
| Environmental class | EURO 0 |
| Approximate life expectancy | 300 000 HP |
| City | 9.5 litry |
| Route | 5.8 litry |
| Mixed | 7.1 litry |
The weight of the M21 engine according to the catalog is 194 kg. The engine number M21 is located at the junction of the block and the oil pan. This diesel engine cannot tolerate prolonged overheating, which can cause cracks in the cylinder head. The engine will not start if the glow plug control unit fails. Often, the oil supply hoses to the radiator crack here and the lubrication pressure drops. Keep an eye on the condition of the timing belt, as it can stretch, jump, and disrupt the timing. Sometimes there are unintentional starter activations while driving in traffic jams.
| 3-Series E30 | 1985 - 1991 |
| 5-Series E28 | 1983 - 1987 |
| 5-Series E34 | 1988 - 1991 |
| Continental Mark VII | 1984 - 1985 |
The 1.7-liter diesel engine BMW M41 or M41D17 was produced from 1994 to 2000 and installed only in one model: the E36 3 Series, but in all its numerous body versions. This power unit has 86% common parts with the popular 6-cylinder diesel M51. The lineup of four-cylinder engines also includes: M47, N47, and B47.
The BMW B47 engine series, with a capacity of 2.0 liters and consisting of four cylinders, running on diesel fuel, has been produced since 2014. This engine is installed in front-wheel drive vehicles as B47C20, in rear-wheel drive vehicles as B47D20, and in Mini models as B47C20A. These engines come in two different generations, and their updated versions are called B47TU1. The R4 engine lineup also includes the following engines: M41, M47, and N47.
6-cylinder BMW M57 diesel engines with a capacity of 2.5 and 3.0 liters were produced from 1998 to 2012 and were practically installed in all major models of the company at that time. There are three generations of these power units, commonly referred to as M57, M57N, and M57N2. The R6 line also includes engines: M21, M51, N57, and B57.
The 6-cylinder BMW B57 diesel engines with a capacity of 3.0 liters have been produced since 2015 and are installed in the most popular models powered by rear-wheel drive or all-wheel drive by the German company. There are three variants of these power units: with one, two or four turbochargers. The range of R6 engines also includes units: M21, M51, M57, and N57.
1.6-liter Diesel engine Peugeot DV6TED4 or 1.6 HDi 109 was produced from 2004 to 2011 and practically installed in all more or less known cars of the French company. There were two versions of this engine: 9HY compliant with Euro 3 standard and 9HZ compliant with Euro 4 standard with a particulate filter. Other DV6 Diesel engines are: - DV6A - DV6B - DV6C - DV6D - DV6E - DV6FC - DV6FD - DV6FE
The 2.6-liter gasoline engine Isuzu 4ZE1 was produced by the company from 1988 to 1998 and installed in the most popular models of that time, such as Trooper, Mu, and Wizard. This power unit was mainly offered in versions with full four-wheel drive for off-road vehicles. The Z-engine line also includes the engine: 4ZD1.