The product is a set of 4 Bosch 7560 F8DC copper spark plugs designed to fit Mercedes-Benz, Fiat, and Saab vehicles. These high-performance spark plugs are manufactured in Germany and meet OE/OEM part numbers 0031596703 and 0241229634-076. With a thread diameter of 14mm and an installation depth of 19mm, these spark plugs are suitable for gasoline engines and come with a 12V voltage requirement. The package includes a California Prop 65 warning due to the presence of a chemical known to cause cancer and reproductive harm. Perfect for those looking to upgrade their ignition system with reliable and efficient spark plugs. Exact item set is shown. Vintage new old stock spark plugs. Packaging may have a musty odor from storage. 0.7mm gap, 16mm hex size, 19mm thread reach. Set weight 7 oz. Made in Germany. No returns on installed items or partial sets. Please review our business policies in our store for information regarding returns, shipping and warranties. Most items have 30-day returns along with free fast shipping in 1 business day (see details). Message us anytime. Buy from a trusted 16+ year seller!