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- V-Twin performance spark plugs features a copper core electrode for a longer service life
- Nickel plated housing, 95% pure alumina insulator
- Heat crimping process to ensure a leak free seal
- One heat range hotter than stock plug
- Long reach type
- Sold in pairs
- Fits:
- Shovelhead 1975-1984
- Evolution Big Twin 1984-1999
- Replaces OEM: 32342-04 5R6A