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The NGK Iridium IX spark plug combines a fine iridium tip and tapered-cut ground electrode to deliver extreme ignitability, improved throttle response and better starting and idling—especially useful in modified or high-performance applications. Its iridium center electrode offers much greater hardness than platinum for high-temperature durability. Trivalent plating adds corrosion resistance for dependable long-term operation.
NGK Iridium IX Spark Plug Box of 4 (LZTR4AIX-11)
