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M3 engine

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Engine Codes Engines have codes, too. The codes are 2 or 3 numbers prefixed by a letter like "M" or "S".

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An "M" means that the engine has been developed by BMW, while an "S" means that it's an M-engine modified for extra performance by BMW Motorsport. Following the letter is a number that identifies the model. BMW usually specifies the engine designation followed by the engine capacity, as the M52B25 is the 2.5-liter version of the M52. The "B" in M52B25 stands for "Benzin", the German word for petrol (UK) or gasoline (USA), whereas a Diesel engine would use the code "D". Finally, sometimes you will see an engine code with a suffix, as the M06 is also known as the M30B25V with the V meaning "Vergasser" or Carburetor.

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TYPE CYLS ENGINE SIZES EXAMPLES VALVES
M10 click here for photo 4 1.6, 1.8, 2.0 2002, 318i, 320i 8
M20 click here for photo 6 2.0, 2.3, 2.5, 2.7 323i, 325i, 325e, 528e 12
M21 6 2.4  324d, 524td 12
M30 click here for photo 6 2.8, 3.0, 3.3, 3.5 5, 6 and 7 Series from 1975-1992 12
M40 4 1.6, 1.8 316i, 318i 8
M41 4 1.8 E36 318tds 8
M42 4 1.8 318i, is, ti, Z3 16
M44 click here for photo 4 1.9 318i, Z3 16
M47 4 1.9 320d 16
M50 6 2.3, 2.5, 2.8 325i, 525i 24
M50TU 6 2.3, 2.5, 2.8 325i, 525i 24 VaNos
M51 6 2.5 325td, 525tds, 725tds 12
M52 click here for photo 6 2.8 528i 24 VaNos
M54 click here for photo 6 3.0 X5, E46, Z3, Z4 24 Double VaNos
M57 6 3.0 530d 24
M60 click here for photo 8 3.0, 4.0 530i, 540i, 730i, 740i, 840Ci 32
M62 click here for photo 8 4.4 535i, 540i, 735i, 740i, 840Ci 32
M67 8 3.9 740d 32
M70 click here for photo 12 5.0 750i, 750iL, 850i, 850Ci 24
M73 12 5.4 750i, 750iL, 850i, 850Ci 24
M88 6 3.5 M5, M6 24
S14 click here for photo 4 2.3 E30 M3 16
S38 click here for photo 6 3.5  M5 24
S50 6 3.0 E36 M3 24 VaNos
S52 6 3.2 E36 M3 24 VaNos
S54 click here for photo 6 3.2 E46 M3 24 VaNos
S62 click here for photo 8 5.0 E39 M5 48 VaNos
S70 12 5.6 850Csi 24
 

 

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