Champion 63 Copper Plus Spark Plug RJ14YC

The Champion 63 Copper Plus Spark Plug (RJ14YC) delivers reliable ignition performance with proven Champion engineering. This copper core spark plug features a resistor design that suppresses radio frequency interference (RFI) to protect sensitive electronics while maintaining consistent spark energy.

Key Features:

• Copper core electrode for excellent conductivity and heat control
• SAC-9 resistor suppresses RFI to prevent interference with radio and navigation equipment
• Triple-coated shell provides superior corrosion resistance in harsh environments
• Triple-seal assembly prevents combustion gas leakage
• Precision-rolled threads meet OEM specifications for proper fit
• 14mm thread diameter with 0.750-inch reach
• 5/8-inch hex size for standard socket installation
• Made in USA

The RJ14YC plug type is an R-series design, incorporating Champion's SAC-9 resistor technology made from strontium carbonate, aluminum oxide, and copper oxide powders. This resistor construction effectively limits electromagnetic interference without compromising ignition performance, making it suitable for engines with electronic ignition systems and onboard electronics.

This spark plug is commonly specified for small engines, lawn and garden equipment, marine applications, and various automotive engines. Always consult your owner's manual or Champion's application guide to verify correct plug selection for your specific engine.