The 4pk Bosch 9654 OE Fine Wire Iridium Spark Plugs are high-quality spark plugs manufactured in Germany. These spark plugs are designed for optimal performance and are designed to last. With the OE Part Numbers and Manufacturer Part Number being 9654, you can trust that these spark plugs are a perfect fit for your vehicle. Upgrade your ignition system with these top-of-the-line spark plugs from Bosch.