Spark Plug Indexing Washers
Shim spark plugs with washers to align the electrodes toward intake ports as well as adjusting the plug to piston clearance.
Gold washers- .75 mm
Silver washers- 1.00 mm
Purple washers – 1.25mm
Red washers- 1.60mm
Description
Shim spark plugs with washers to align the electrodes toward intake ports as well as adjusting the plug to piston clearance.