JEGS Performance Products 40356 - JEGS Spark Plug Indexing Washers

JEGS Spark Plug Indexing Washers will help you fine tune your motor for maximum performance by properly locating the spark plug electrode. Manufactured from solid copper to insure proper seal and heat transfer. Designed for 14mm spark plugs and available for a flat (in .043", .054" & .064" thickness) or tapered seat (in .010", .021" & .032" thickness). Made in the USA. 30/pkg = 10/size.