The ZFR7F SPARK PLUG (86-5913) Autowares is a high-quality double-platinum spark plug that is reliable and long-lasting. It's a part that goes into the cylinder head of an internal-combustion engine and consists of two electrodes separated by an air gap, over which electricity from an elevated ignition system discharges to form a spark for lighting the air-fuel combination. This high-quality product is well-designed to work across a temperature range than regular plugs. It is resistant to carbon buildup and pre-ignition. High alumina ceramics are used in each for better electrical insulation and heat transfer. Key Features: The double-platinum spark plug of the highest quality 100% brand new and made with the highest quality materials available, with zero defects in production. Start the fire by igniting the air/fuel mixture. Heat should be removed from the combustion chamber. As a heat exchanger, it removes waste heat from the combustion chamber and transfers it to the engine's cooling system. Installation is simple. Specifications: SKU: 86-5913 UPC: 087295059135 Weight: 0.15 LBS