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91961 Spark Plug NGK Laser Iridium Spark Plug V8 FLEX SOHC Naturally Aspirated(4PCS ) Spark Plug Laser Iridium NGK 91961 (4PCS ) Spark Plug Laser Iridium NGK 91961 Click images to enlarge Description * 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