Champion 286 Champion Racing Plugs- Boxed - S61C

Ceramic insulator resists dielectric puncture. Designed to withstand extreme operating temperatures and pressures. Correct heat range is critical in maintaining peak performance throughout the race. Champion racing plugs are engineered to help engine builders, weekend racers and street performance enthusiasts optimize engine performance. Enjoy the same spark plugs that go into many professional race cars and trucks. Exceptional combustion and strength.