NGK Standard Spark Plug - DCPR7EA-9 NGK is the undisputed leader in Motorcycle Spark Plugs, with spark plugs for virtually every Motorcycle and Scooter application in the world. Utilizing a wide variety of materials, from standard copper-core type to Iridium, NGK is the world's leader in spark plug engineering and technology. NGK Spark Plugs are specified by more motorcycle manufacturers, including Honda, Yamaha, Suzuki, and Kawasaki.Triple-Gasket Sealing ProcessVirtually eliminates the possibility of combustion gas leakage through the shell. Most other manufacturers only use two seals. Solid-Copper CoreProduces a more powerful spark with less firing voltage. Other manufacturers use a "copper coated" center core. Corrosion ResistantZinc Chromate Coating double dipped for maximum protection. An NGK exclusive.Alumina Silicate InsulatorVirtually pure to insure dielectric and physical strength, as well as heat transfer away from the tip for maximum performance.Corrugated RibsEliminate "flashover", which can cause misfiring and engine damage, especially in damp environments. Fits the following models HARLEY DAVIDSON XL53C, Sportster 883 (All Models) 1986 + XL883 Iron 2009 +
