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.

Fig 1: Engine Identification Number (B37/B36A/B38A/B47/B48)

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Engine Identification Number (B38B/B48B)

Courtesy of BMW OF NORTH AMERICA, INC.