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The NGK Iridium Racing spark plug is designed for competitive engines, offering high ignitability, tailored heat ranges and rugged electrode designs for durability under race conditions. Trivalent plating helps resist corrosion and seizing, while the alumina silicate insulator and copper core improve strength and heat transfer. Special configurations aim to enhance throttle response and consistent spark delivery. Supplied as a box of four.
NGK Iridium Racing Spark Plug Box of 4 (R7435-10)
