NGK SPARK PLUGS IRIDIUM IX SPARK PLUG SPARK PLUG NGK R0373A-10

The ultimate in the evolution of spark plug technology and performance from the industry leader The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode Ultra-small-diameter center electrode reduces voltage requirement and extends ignition system life Metal shell plating has enhanced anticorrosion qualities IRIDIUM IX SPARK PLUG Iridium IX Racing Spark Plug SPARK PLUG NGK R0373A-10