A special thread and shell coating ensures quick and easy removal from aluminum heads and resists corrosion.
Gold palladium insert extends life and improves resistance to corrosion
Tapered tip provides better spark exposure to air/fuel mixture and allows the mixture to flow more easily through gap area for maximum combustibility
Fouling resistance is improved with smaller diameter center electrode wire and insulator tip
Copper-cored ground electrode runs cooler for extended life
Anti-seize coating on threads
Anti-seize coating on threads
Fits late '78-'84 Shovelhead and '84-'99 Evolution® 1340-equipped models or use in place of Nos. 5R6A and 5RL.
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