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The NGK Iridium IX spark plug is a high-ignitability replacement that uses a fine iridium center electrode and a tapered-cut ground electrode to improve starting, idle and throttle response for modified or high-performance applications. It delivers stronger acceleration, improved fuel economy and long service life; trivalent plating resists corrosion while the iridium tip endures high temperatures far better than platinum.
NGK IX Iridium Spark Plug Box of 4 (ZNAR7AIX)
