The OEM Motorcraft SP541A Double Platinum Spark Plug Set is designed for use in Ford, Mazda, Mercury, and Lincoln vehicles. This set includes 4 spark plugs, ideal for ignition systems and engine performance. The spark plugs feature double platinum construction for durability and reliable ignition, making them a quality choice for maintaining your vehicle's engine efficiency. Additionally, they are compatible with various interchange part numbers, ensuring proper fitment in a variety of vehicle models.