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NGK Racing spark plugs are tailored for extreme, competitive conditions and are engineered to withstand grueling engine use. Special center electrode configurations and a range of heat ratings support ultra-high performance and ignitability across racing applications. Built with NGK’s robust ceramic insulators, corrosion-resistant plating and copper cores for heat control, these plugs are selected for demanding motorsports and high-temperature environments.
NGK Racing Iridium .5 Spark Plug Box of 4 (R7420-105)
