ACCEL Ignition U-Groove Spark Plug Tapered 0576S-4

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ACCEL® U-Groove performance spark plugs produce a larger spark for more power at high RPMs. Improves throttle response and fuel economy, less fouling. Purified alumina insulator pr events arcing. Machine rolled threads protect heads. U-Groove Designed For Spark Delivery Copper Core Utilized For Maximum Spark Improves Throttle Response And Fuel Economy, Less Fouling Purified Alumina Insulator Prevents Arcing Machine Rolled Threads Protect Heads Limited 90 Day Warranty Show more