SPARK PLUG INDEXING WASHER 12 PIECE SET

Indexed spark plugs align the open end of the electrode toward the intake port

The hottest flame meets the new fuel charge for a performance gain, increased mileage and plug life

Gold washers- .75 mm

Silver washers- 1.00 mm

Purple washers - 1.25mm

Red washers- 1.60mm

12 Pieces