4122 BR7HS Standard Spark Plug

NGK spark plugs are designed to operate over a much wider heat range than ordinary plugs. They resist carbon buildup and pre-ignition. Each features high alumina ceramics for better heat transfer and electrical insulation. A patented triple gasket sealing process eliminates the possibility of combustion gas leakage, and a longer insulator nose prevents fouling and misfiring. A solid copper core and its nickel tipped electrode provide a longer plus life. Specifications Dimension: 0.89 in H x 0.98 in W x 3.43 in L. Weight: 0.12 lbs.