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The NGK Iridium IX spark plug is aimed at enthusiasts seeking sharper throttle response and durable ignition. A fine iridium center electrode yields extreme ignitability and long life—significantly harder than platinum—while a tapered ground electrode improves starting, idling and throttle response. High-grade ceramic insulation, trivalent plating and robust construction offer anti-fouling and corrosion resistance for demanding modern engines.
NGK Iridium Spark Plug Box of 4 (LFR5AIX-11)
