Description
NOTE: Plugs are sold in quantities of (4), but billed individually. When ordering please change quantity from (1) to (4).
For racing and other high performance engines, Autolite Iridium XP Enhanced Alloy Technology Spark Plugs offer an iridium-enhanced .6mm finewire with better overall ignitability and durability in a Hi-Performance category. In addition, the Autolite Revolution HT High Thread spark plugs are specifically designed for Hi-Performance deliverance in Ford Motor Company's 4.6L, 5.4L, and 6.8L 3-valve engines.