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The NGK Iridium IX spark plug is an upgraded replacement intended for drivers seeking improved throttle response and efficiency. A fine iridium center electrode provides extreme ignitability and durable, consistent sparks, while a tapered ground electrode improves starting, idle and throttle response. Trivalent plating and high-grade ceramic insulator protect against corrosion and overheating, making these plugs suitable for modified or high-performance applications.
NGK Single Iridium Spark Plug Box of 4 (UR45IX)
