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The NGK Iridium IX spark plug provides high ignitability and robust durability for modified or performance-minded engines. A fine iridium center electrode ensures consistent spark and extreme wear resistance, while a tapered ground electrode improves starting, idle and throttle response. Trivalent metal plating and high-grade ceramic insulation enhance corrosion resistance and heat management, delivering improved acceleration and fuel efficiency versus conventional plugs.
NGK Single Iridium Spark Plug Box of 4 (LTR5IX-11)
