Champion RN12YC Spark Plugs for Harley-Davidson Shovelhead and Evolution Suspension Big Twin Parts Washable and reusable high-flow 4-layer

Washable and reusable high-flow 4-layer cotton element and a urethane body

packs a formidable amount of cold cranking amperage that can turn over engines effortlessly

Chains do require adjustment

Accel has just what you need

1-3/8" diameter body

Champion RN12YC Spark Plugs for Harley-Davidson Shovelhead and Evolution Suspension Big Twin Parts Washable and reusable high-flow 4-layerChampion RN12YC Spark Plugs for Harley Davidson Shovelhead and Big Twin Evolution Whether it's time for a tuneup or you're troubleshooting an acute ignition problem, these Champion spark plugs will restore lost ignition performance. Copper core Zinc plated shell for corrosion resistance Resistor for suppression of electromagnetic interference Sold as a pack of four