Spark Plug: Service and Repair
Replacing All Spark Plugs (M52, M52TU, S52, S50US, M54)
Removing ignition coils.
Unscrew and remove spark plugs with special tool 12 1 171 in conjunction with special tool 12 1 200.
Spark Plug Torque:
Installation:
If special tool 12 1 200 is not used, tightening torque, 12 12 1AZ.