http://www.hastingsmfg.com/RingFinderMasterDetails.aspx?AppMACD=MERBGAS%20&AppMOCD=MERCEDES-BENZ&AddText=(Never%20use%20Plated%20Rings%20in%20Plated%20Cylinders)(Listed%20by%20Cylinder%20Diameter)



try this place......call them if you have to.