Upgrade your vehicle's ignition system with this 4-pack of brand new Bosch 9603 Double Iridium Spark Plugs. Designed for gasoline-fueled engines, these high-quality spark plugs are made in Germany and feature OE/OEM part number 0 242 236 599-HUK. The manufacturer part number is 9603. Ideal for any car or truck, these spark plugs offer reliable performance and improved fuel efficiency. Trust in the Bosch brand to deliver top-of-the-line ignition systems and components. Don't miss out on this opportunity to upgrade your vehicle's performance with these Bosch 9603 spark plugs.