These Moroso indexing washers are designed for use on all 14mm spark plugs with 5/8″ hex. One will correct the electrode placement on any plug and simplify the time consuming task of spark plug indexing. The washers are precision stamped from copper for perfect sealing and heat transfer. Includes 10 of each size: .043″, .050″, .064″.
Designed for use on all 14mm spark plugs
Three thicknesses in each package
Precision stamped from copper
30 per package, 10 each size