Upgrade your ignition system with this pack of 8 Genuine Motorcraft Factory Spark plugs designed for FORD, Lincoln, and Mercury vehicles. These performance spark plugs have a hex size of 0.07 cm (0.028 in) and a manufacturer heat range of 100 °C, making them ideal for gasoline fuel types. Not only are they vintage parts, but they also come with a manufacturer warranty of 2 years. Whether you're a car enthusiast looking to enhance your ride or a mechanic in need of reliable spark plugs, these Motorcraft plugs are the perfect choice. Get your vehicle running smoothly and efficiently with this top-quality pack of spark plugs.