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The NGK Racing spark plug box of four is crafted for competitive engines that demand extreme durability and consistent ignition. Its specialized center electrode and advanced insulator design improve ignitability and heat control, while trivalent metal plating reduces corrosion and seizing. Corrugated ribs prevent flashover, a copper core aids heat removal, and triple seals protect against leakage for reliable performance across varied racing heat ranges.
NGK Racing Spark Plug Box of 4 (R5671A-9)
