Champion Spark Plug RN12YC For Harley-Davidson Big Twin Evolution
- Champion Power sport series plugs include all the features of their conventional plugs, but are built with extreme engine conditions and durability in mind
- Copper Plus motorcycle spark plugs have a copper core center electrode that allows for accurate control of heat range, optimizing performance,and longevity for the sparkplug
- Fine wire electrodes increase ignitability by reducing spark quench
- Increased bore clearances between shell and core nose reduces fouling caused by carbon deposits
- Patented SAC-9 semi-conductor resistor for maximum EMI and RFI suppression
- Thread: 14 mm
- Reach: 19 mm
- Fits:
- Evolution Big Twin 1984-1999
- Shovelhead 1978-1984
- Replaces OEM: 5R6A, 32342-04
- Made in USA
- Sold each