Drive in engine numbers at marked surface with impact tool.

M47 / M47TU / M47T2

Fig 1: Identifying Engine Identification Marks - M47 / M47TU / M47T2

Courtesy of BMW OF NORTH AMERICA, INC.

M57 / M57TU / M57T2

Fig 2: Identifying Engine Identification Marks - M57 / M57TU / M57T2

Courtesy of BMW OF NORTH AMERICA, INC.

M67 / M67TU

Fig 3: Identifying Engine Identification Marks - M67 / M67TU

Courtesy of BMW OF NORTH AMERICA, INC.

N47 / N47S

Fig 4: Identifying Engine Identification Marks - N47 / N47S

Courtesy of BMW OF NORTH AMERICA, INC.

M52 / M52TU

Fig 5: Identifying Engine Identification Marks - M52 / M52TU

Courtesy of BMW OF NORTH AMERICA, INC.

M54

Fig 6: Identifying Engine Identification Marks - M54

Courtesy of BMW OF NORTH AMERICA, INC.

M56

Fig 7: Identifying Engine Identification Marks - M56

Courtesy of BMW OF NORTH AMERICA, INC.

N40 / N45 / N45T / N43

Fig 8: Identifying Engine Identification Marks - N40 / N45 / N43T / N43

Courtesy of BMW OF NORTH AMERICA, INC.

N42 / N46 / N46T

Fig 9: Identifying Engine Identification Marks - N42 / N46 / N46T

Courtesy of BMW OF NORTH AMERICA, INC.

N51 / N52 / N52K / N53 / N54

Fig 10: Identifying Engine Identification Marks - N51 / N52 / N52K / N54

Courtesy of BMW OF NORTH AMERICA, INC.

N62

Fig 11: Identifying Engine Identification Marks - N62

Courtesy of BMW OF NORTH AMERICA, INC.

N73

Fig 12: Identifying Engine Identification Marks - N73

Courtesy of BMW OF NORTH AMERICA, INC.

S54

Fig 13: Identifying Engine Identification Marks - S54

Courtesy of BMW OF NORTH AMERICA, INC.

S85 / S65

Fig 14: Identifying Engine Identification Marks - S85 / S65

Courtesy of BMW OF NORTH AMERICA, INC.

W10 / W11

Fig 15: Identifying Engine Identification Marks - W10 / W11

Courtesy of BMW OF NORTH AMERICA, INC.

W17

Fig 16: Identifying Engine Identification Marks - 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

Rather have a pro handle this?