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.

M47 / M47TU / M47T2

Fig 1: Identifying Engine Identification Label (M47 / M47TU / M47T2)

Courtesy of BMW OF NORTH AMERICA, INC.

M57 / M57TU / M57T2

Fig 2: Identifying Engine Identification Label (M57 / M57TU / M57T2)

Courtesy of BMW OF NORTH AMERICA, INC.

M67 / M67TU

Fig 3: Identifying Engine Identification Label (M67 / M67TU)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 4: Identifying Engine Identification Label (N47 / N47S / N47C / N47T / N57 / N57S / N57T)

Courtesy of BMW OF NORTH AMERICA, INC.

M52 / M52TU

Fig 5: Identifying Engine Identification Label (M52 / M52TU)

Courtesy of BMW OF NORTH AMERICA, INC.

M54

Fig 6: Identifying Engine Identification Label (M54)

Courtesy of BMW OF NORTH AMERICA, INC.

M56

Fig 7: Identifying Engine Identification Label (M56)

Courtesy of BMW OF NORTH AMERICA, INC.

N20 / N26

Fig 8: Identifying Engine Identification Label (N20 / N26)

Courtesy of BMW OF NORTH AMERICA, INC.

N40 / N45 / N45T / N43

Fig 9: Identifying Engine Identification Label (N40 / N45 / N45T / N43)

Courtesy of BMW OF NORTH AMERICA, INC.

N42 / N46 / N46T

Fig 10: Identifying Engine Identification Label (N42 / N46 / N46T)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 11: Identifying Engine Identification Label (N51 / N52 / N52K / N52T / N53 / N54 / N55)

Courtesy of BMW OF NORTH AMERICA, INC.

N62 / N62TU

Fig 12: Identifying Engine Identification Label (N62 / N62TU)

Courtesy of BMW OF NORTH AMERICA, INC.

Position (1) engine number.

Position (2) engine code letters.

N63, N63TU.

S63

N74

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 13: Identifying Engine Number And Engine Code Letters

Courtesy of BMW OF NORTH AMERICA, INC.

N73

Fig 14: Engine Number Label Location (N73)

Courtesy of BMW OF NORTH AMERICA, INC.

S54

Fig 15: Engine Number Label Location (S54)

Courtesy of BMW OF NORTH AMERICA, INC.

S85 / S65

Fig 16: Engine Number Label Location (S85 / S65)

Courtesy of BMW OF NORTH AMERICA, INC.

W10 / W11

Fig 17: Engine Number Label Location (W10 / W11)

Courtesy of BMW OF NORTH AMERICA, INC.

N12 / N13 / N14 / N16 / N18 / W16

Fig 18: Engine Number Label Location (N12 / N13 / N14 / N16 / N18 / W16)

Courtesy of BMW OF NORTH AMERICA, INC.

W17

Fig 19: Engine Number Label Location (W17)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Engine identification

Use the Manual With the Right Hardware

When to See a Mechanic

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