The product is a set of 8 genuine OEM platinum spark plugs with the part numbers SP546 PZK14F. These spark plugs are designed for direct replacement in vehicles such as F150 and F250 with a 5.4L engine, running on gasoline. Manufactured by NURPAAUTO, these spark plugs have a manufacturer warranty of 3 years and are made of high-quality platinum material. With a surface finish of new, these spark plugs are a reliable choice for maintaining the ignition system of your vehicle.