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NGK Laser Iridium spark plug (box of 4) pairs long service life with superior ignitability thanks to an iridium-tipped fine-wire center electrode that withstands wear. High-grade alumina ceramic and a 98% copper core help prevent overheating and maintain reliable starts. Many designs also use a platinum pad on the ground electrode for even wear in distributorless systems; trivalent plating aids corrosion resistance.
NGK Laser Iridium Spark Plug Box of 4 (ITR4A15)
