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The NGK Racing spark plug four-pack is made for severe motorsport duty, providing high ignitability and durability under demanding conditions. Special center-electrode designs enhance spark performance while the alumina silicate ceramic insulator improves heat transfer. Trivalent metal plating offers corrosion and seizing resistance; corrugated ribs, copper core and triple seals help maintain reliable starts and consistent operation across heat ranges.
NGK Racing Spark Plug Box of 4 (R5671A-8)
