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The NGK Racing spark plug is engineered to handle grueling racing conditions with specialized electrode geometries and insulator designs for improved ignitability and throttle response. Trivalent metal plating provides corrosion and seizing protection, while the alumina ceramic insulator and copper core improve strength and heat transfer. Built for a variety of racing heat ranges and supplied as a box of four.
NGK Racing Spark Plug Box of 4 (R5671A-11)
