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NGK Laser Iridium spark plug (box of 4) balances longevity and high ignitability using an iridium-tipped fine-wire center electrode that resists wear. High-grade alumina ceramic and a 98% copper core limit overheating and support reliable starts. Many designs include a platinum pad on the ground electrode for even wear in distributorless systems; trivalent metal plating and triple seals aid corrosion resistance and installation/removal.
NGK Laser Iridium Spark Plug Box of 4 (IMR9C-9HES)
