Buy NGK (1098) BR7HS-10 Standard Spark Plug, Pack of 1: Spark Plugs - ✓ FREE DELIVERY possible on eligible purchases. Solid copper core for greater spark . Longer insulator nose prevents fouling . Corrugated ribs on insulator prevents flashover . Zinc dipped shell prevents corrosion . Triple gasket seal eliminates combustion gas leakage . Solid copper core for greater spark . Corrugated ribs on insulator prevents flashover . 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. . . .