Champion RJ12YC Spark Plug
- Buy 4 for $3.00 each and save 28%
- Buy 16 for $2.94 each and save 30%
- Dependable performance
- Copper core center electrode allows for accurate control of heat range for longer life
- Patented SAC-9 semi conductor resistor for maximum corrosion resistance
Spark plugs automotive champion RN9YC & RN11YC4-32: Resistor plug, 14mm, 3/4 inches reach, 13/16 inches hex head, projected tip, copper core. RJ12YC: Resistor plug, 14mm, 3/8 inches reach, 13/16 inches hex head, standard projected core nose, copper core design.