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 incredible physical strength
sophisticated ceramic properties 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 sealsSolid copper core ensures greater spark and heat transferLonger insulator nose, also called a "power tip"
helps prevent loading up or fouling even after prolonged periods of idling or at slow speedsShells are double dipped in a tough, corrosion-resistant zinc chromate coating ensuring maximum rust resistance
