Autolite 847 - Copper Spark Plug with Resistor

Autolite creates the highest quality ignition products for a wide variety of engines. Established in 1911, the company started manufacturing buggy lamps and became a thriving automotive parts manufacturer by the 1930's. Still, the first Autolite spark plug saw the world in 1936 and had instant success on the market. Today, the company is known as the manufacturer of America's best-selling spark plug and offers a number of spark plug series such as Autolite XP Xtreme Performance, Autolite Platinum, Autolite Revolution HT, Autolite Double Platinum, etc. Fitment: Fits:Buick Apollo 1975 Fits:Cadillac Eldorado 1979-1980 Specifications: Thread Diameter: 14mm Thread Pitch: 1.25mm Seat Type: Gasket Reach: 9.5mm (3/8") Hex Size: 13/16" (21mm) Terminal Type: Solid Gap: .071" (1.8mm) Electrode Material: Copper Ground Electrode Tip Design: Standard / Regular Insulator Type: Mid Projected Insulator Material: Ceramic Resistor: Yes Nominal Gap: 1.1 mm Spark Plug Thread Size: 0.551" Spark Plug Reach: 0.375" Heat Range: 7 Seat Type: Gasket Seat CS-SKU : 534|847

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