Skip to product information
- V-Twin performance spark plugs features a copper core electrode for a longer service life, nickel plated housing, 95% pure alumina insulator and a heat crimping process to ensure a leak free seal
- Sold in pairs
- Replaces spark plug HD #3 and #4 short reach type
- Fits 1948-1974 Big Twin models
- Replaces OEM: 32337-04