Superior construction, longer life, and optimum performance - all are standard with NGK, the brand specified as the #1 spark plug for performance . Corrugated ribs help prevent "flashover" of spark which can lead to harmful misfires and rob you of performance Highly pure alumina silicate insulator ensures dielectric strength and incrediblephysical strength - sophisticated ceramicproperties ensure proper heat transfer Triple gasket sealing process virtually eliminates the possibility of combustion gas leakage back through the shell -other manufacturers use only one or two seals Solid copper core ensures greater spark and heat transfer Longer insulator nose, also called a "power tip", helps prevent loading up or foulingeven after prolonged periods of idling or at slow speeds Shells are double dipped in a tough, corrosion-resistant zinc chromate coating ensuring maximum rust resistance

Superior construction, longer life, and optimum performance - all are standard with NGK, the brand specified as the #1 spark plug for performance . Corrugated ribs help prevent "flashover" of spark which can lead to harmful misfires and rob you of performance Highly pure alumina silicate insulator ensures dielectric strength and incrediblephysical strength - sophisticated ceramicproperties ensure proper heat transfer Triple gasket sealing process virtually eliminates the possibility of combustion gas leakage back through the shell -other