12 12 011 Replacing all spark plugs (M60, M62)
Switch off ignition.
Remove ignition coils.
Unscrew spark plugs with special tool 12 1 171.
Installation:
Tighten down spark plugs with special tool 12 1 171 and special tool 12 1 200 (torque limiter).
Without special tool 12 1 200, observe tightening torque.
Tightening Torque, refer to 12 12 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES - X5 4.6L .