This piston ring set from Hastings is designed for use on various 1968-1986 Ford V8 engines. With a manufacturer part number of 5485030, this set includes 40 pieces of piston rings and is suitable for cylinder bore diameters of 4.050 inches. The material used to make these rings is multiple and the set weighs 1 lb. The set is brand new and has never been used before. It is ideal for anyone who needs to replace their old piston rings to improve the performance of their engine. The set is vintage-free and does not contain any performance parts. Purchase this product today and give your engine the upgrade it deserves.