Moroso Spark Plug Indexer Aluminum Cylinder Heads Available for most domestic V8

Available for most domestic V8 applications

Standard doors:

Genuine Bosch LSU 4

Machine Rolled 14mm Threads Protect Your Valuable Cylinder Heads

Moroso Spark Plug Indexer Aluminum Cylinder Heads Available for most domestic V8High compression race engines require "indexing" of spark plugs to prevent contact between piston dome and the ground wire of the spark plugs Moroso's "Indexer, " designed for both flat and taper seat 14mm spark plugs, enables selection of spark plugs that will not make such contact Once a given plug is selected (placed in a cylinder head and found to have the correct ground wire position), it is placed in the Moroso Plug Indexer and the position of