Category: Drivetrain
Price: $16
Private or Vendor Listing: Private Listing
Part fits (you may select multiples): R55, R56, R57, R58, R59, R60
Location (Region): NorCal
Item Condition: Brand New

Anyone interested in an indexing kit consisting of various sized washers for the 12mm plugs?
Beneficial for those running boost over 21psi.

The ideal position of the plug is such that the gap is facing towards the valves, preferably the exhaust valve. 2. The object of indexing is to avoid this problem: when this plug fires the spark is directed towards the chamber wall, rather than the center of the combustion chamber. 3.