12 12 011 Replacing all spark plugs

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Special tools required:

12 1 171

Remove/grind off collar (1) on special tool 12 1 171 (phi 22mm) otherwise tool cannot be inserted into spark plug shaft.

Fig 1: Identifying Collar On Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Remove spark plug connectors.

Release spark plugs with special tool 12 1 171.

Tightening torque 12 12 1AZ. Refer to ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .