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Spark Plug. (XP5503) by Autolite
Autolite® Iridium XP is an engineered OE replacement iridium spark plug, balancing a tested blend of iridium, platinum and palladium. Autolite® Iridium XP plugs precisely focus spark energy at the optimum ignition point to deliver high power, long life and exceptional value
Heat range precisely set by Ionization Sensing Technology
Autolite XP5503
