This Motorcraft ZD-13 diesel glow plug is a genuine factory OEM product that comes with free shipping. It is designed to fit perfectly as a direct replacement for your vehicle's ignition system and is compatible with diesel fuel types. The product is brand new and has never been used before. With the other part number of 4C3Z-12A342-AA, this glow plug is of high quality and manufactured in the United States. This item is sold in a quantity of one and is an essential part of your car or truck's ignition system.jd201-a