12 12 011 Replacing All Spark Plugs (N62, N62TU)

Special tools required: 

• 12 1 171
• 12 1 172

Necessary preliminary tasks: 

• Switch off ignition
• Remove all 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 1 172 (torque limiter).

Without special tool 12 1 172, observe tightening torque.

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

Fig 1: Tightening Down Spark Plugs With Special Tool 12 1 171 And 12 1 172

Courtesy of BMW OF NORTH AMERICA, INC.