Champion Copper Plus Spark Plug RN9YC

Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. Copper plus dependable performance Copper core center electrode allows for accurate control of heat range for longer life Patented tintac and ultraseal coated shell for maximum corrosion resistance Patented SAC-9 semiconductor resistor for maximum EMI & RFI suppression Built to ISO and SAE standards for proven performance