12 12 011 Replacing all spark plugs: Procedure

• M52/M52TU/M54/M56
• S52/ S50US

Necessary preliminary tasks: 

• Remove ignition coils, refer to 12 13 511 REPLACING IGNITION COIL (M52, M52TU, S52, S50US, M54) .

Unscrew and remove spark plugs with special tool 12 1 171 in conjunction with special tool 12 1 200.

Fig 1: Removing Spark Plugs

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

If special tool 12 1 200 is not used,

Tightening torque, refer to 12 12 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .