This Mercedes Piston Ring Kit Set by Perfect Circle is specifically designed for OM615 200D and 220D engines, with a piston diameter of 87mm. Made in Germany, this kit includes piston rings with manufacturer part numbers A001 030 2824 and A003 586 4803, as well as reference OE/OEM numbers 0045861003 and A004 586 2503. Ideal for maintaining the engine performance and efficiency of your Mercedes vehicle, this piston ring set is a high-quality and reliable component for your engine needs.