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Laser Iridium spark plugs provide superior ignitability and long service life. Smallest tip diameter available Iridium / Platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. Laser welded Iridium center electrode tip ensures high durability and greater spark. Platinum disc welded to backside of ground electrode provides long life. Longer insulator nose prevents fouling, Corrugated ribs on insulator prevents flashover, and the triple gasket seal eliminates combustion gas leakage. Faster starts and quicker acceleration. Better fuel economy and lower emissions, Trivalent Metal Plating for superior anti-corrosion and anti-seizing.