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The NGK Iridium IX spark plug is a fine-wire iridium replacement tuned for drivers who demand sharper throttle response, improved starts and lasting service life. It’s recommended as an upgrade for modified or high-performance applications. A durable iridium center tip provides extreme ignitability and anti-fouling; a tapered-cut ground electrode enhances starting, idling and throttle response. Trivalent plating, alumina ceramic insulation and a copper core aid heat dissipation and longevity.
NGK Iridium IX Spark Plug Box of 4 (LTR6IX)
