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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.

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

Fig 1: Engine Identification (N51/N52/N52K/N52T/N53/N54/N55)
G10041438Courtesy of BMW OF NORTH AMERICA, INC.

Position (1) engine number.

Position (2) engine code letters.

N63, N63TU.

S63

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

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

Fig 2: Engine Identification (N63/N63TU/S63)
G10041440Courtesy of BMW OF NORTH AMERICA, INC.
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