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The NGK Iridium Racing spark plug box of four is engineered for extreme use in racing environments, combining fine-wire iridium durability with high ignitability. Special center-electrode configurations and a high-grade ceramic insulator promote consistent sparks and heat control. Trivalent metal plating reduces corrosion and seizing while a copper core and triple seals help manage heat and prevent leakage for dependable performance in demanding racing applications.
NGK Iridium Racing Spark Plug Box of 4 (R7438-8)
