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The NGK Racing spark plug is purpose-built for rigorous motorsport use, featuring tailored electrode designs and rugged insulator construction to maintain spark under extreme thermal stress. Copper cores and advanced insulation promote heat management, while trivalent plating helps prevent corrosion and seizing during service. These plugs are intended for engines that demand consistent ignitability in severe operating conditions.
NGK Racing Spark Plug Box of 4 (R7420-10)
