12 12 011 Replacing all spark plugs (N42, N40, N46, N45, N52, N52K, N51)

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Special tools required:

12 1 171 .
12 1 200

Necessary preliminary tasks:

Switch off ignition
Remove IGNITION COILS

Unscrew spark plugs with special tool 12 1 171 .

Fig 1: Identifying Special Tool (12 1 171) And (12 1 200)

Courtesy of BMW OF NORTH AMERICA, INC.

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, 12 12 1AZ .