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The NGK Iridium IX spark plug set is aimed at enthusiasts seeking sharper throttle response and improved fuel efficiency. Its fine iridium center electrode offers exceptional ignitability and durability, with a tapered cut ground electrode for better starting, idling and throttle response. Trivalent metal plating helps prevent corrosion and seizing while the robust ceramic insulator supports consistent spark performance and long service life under demanding conditions.
NGK IX Iridium Spark Plug (Set of 4)
