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Engine identification

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.

Fig 1: Engine Identification (N12/N13/N14/N16/N18)

Courtesy of BMW OF NORTH AMERICA, INC.