Engine identification

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Engine number at the marked surface.

Replacement drives are already assigned a number containing the identification and engine number at the factory.

The old drive number must be imprinted for replacement crankcases.

Magnesium crank cases feature a label, the engine number does not need to be embossed.

N47/N47S/N47C/N47T/N57/N57S/N57T

Fig 1: Engine Identification (N47/N47S/N47C/N47T/N57/N57S/N57T)

Courtesy of BMW OF NORTH AMERICA, INC.

N20/N26

Fig 2: Engine Identification (N20/N26)

Courtesy of BMW OF NORTH AMERICA, INC.

N51/N52/N52K/N52T/N53/N54/N55

Fig 3: Engine Identification (N51/N52/N52K/N52T/N53/N54/N55)

Courtesy of BMW OF NORTH AMERICA, INC.

Position (1) engine number.

Position (2) engine code letters.

N63, N63. N63O2

S63

N74, N74O1,

S63T0 to engine number 2001 0052 on right side cyl. 1-4.

S63T0 from engine number 2001 0053 on left side cyl. 5-8.

E72 Vehicles must be imprinted on the left side cyl. 5-8.

Fig 4: Engine Identification (N63/S63/N74)

Courtesy of BMW OF NORTH AMERICA, INC.