LOT OF 10 NEW PLUGS,The product is a lot of 10 NOS Prestolite 147 spark plugs, vintage 14-7, same as Champion J8C. These spark plugs are direct replacement parts made of nickel material with a thread diameter of 14 mm and a hex size of 13/16. They are manufactured in the United States for gasoline fuel type vehicles. These spark plugs are interchangeable with AC/Delco 44 and have OE/OEM part numbers 147x, 14 7X, and 14 7. Perfect for restoring vintage vehicles, these spark plugs offer a high-quality ignition solution for classic cars.