NGK 5464 BKR5EIX-11 Iridium IX Spark Plug, Pack of 4

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response.The 0.6 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect.Longer insulator nose, the corrugated ribs on insulator prevent flashover, and a triple gasket seal eliminates combustion gas leakage.Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines.Trivalent metal plating.Copper core aids in heat removal