The product is a set of 4 Genuine Motorcraft SP535X Iridium Spark Plugs designed for Ford vehicles with the specified interchange part number SP-535-X and manufacturer part number CYFS12Y1X. Each spark plug weighs 0.5 lbs. These high-quality spark plugs are engineered by Motorcraft to provide reliable ignition performance and ensure optimal engine performance in Ford vehicles. Ideal for car and truck owners looking to replace their existing spark plugs with genuine Motorcraft components that are specifically designed for their vehicle model.