Spark Plug: Service and Repair

12 12 011 - Replacing all spark plugs

Special tools required:
- 12 1 171
- 12 1 200 12 1 200 Torque Limiter 30 Nm

Note:
This repair instruction is valid for the following engines:

- M52 / M52TU / M54 / M56
- S52 / S50US

Necessary preliminary tasks:
- Remove ignition coils Service and Repair.

Unscrew and remove spark plugs with special tool 12 1 171 in conjunction with special tool 12 1 200 12 1 200 Torque Limiter 30 Nm.

Installation:
If special tool 12 1 200 12 1 200 Torque Limiter 30 Nm is not used,

Tightening torque, 12 12 1AZ [1][2]Specifications.