CHAMPION RN12YC Copper Plus - Spark plug for Harley Davidson EVO Big Twin

CHAMPION RA8HC Copper Plus - Spark plug for Harley Davidson M8

• Copper Plus spark plug has a copper core center electrode that allows for accurate control of heat range, optimizing performance and longevity of the spark plug
• Patented SAC-9 semi-conductor resistor for maximum EMI and RFI suppression
• Patented Ultraseal™ coated shell for rust prevention
• Made in the USA
• compatibility with all Harley Davidson 1988-1999 EVO Big Twin models (Softail, Dyna, FXR, Touring)
• OEM cross reference: RN12YC