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The NGK Racing spark plug, sold in a box of 4, is built for severe motorsport conditions where durability and ignitability matter. Special center-electrode configurations and tailored heat ranges help the plug endure extreme use, while a pure alumina silicate insulator and trivalent plating increase strength and resist corrosion. Racing-spec designs and insulator nose options improve throttle response and sustain reliable ignition under high stress.
NGK Racing Spark Plug Box of 4 (R6601-11)
