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NGK Iridium IX spark plug set (box of 4) delivers extreme ignitability and durability for performance applications. The fine iridium center electrode resists wear far beyond platinum while a tapered ground electrode improves starts, idle stability and throttle response. These plugs are aimed at drivers seeking better acceleration, fuel efficiency and anti-fouling characteristics compared with conventional plugs.
NGK Iridium IX Spark Plug Box of 4 (LKR6CIX)
