This offer/listing is for One (1) Only, Very Rarely found and Now Getting Obsolete new old stock Original Equipment vintage "FTE/FAG/Shaffer/Beck-Arnley" Quality made in Germany, Clutch Slave Cylinder Assembly with push-rod Included. Bore size shown on casting as 20mm bore(see photo)! Applications are believed to be for some of the many 1975 thru 1987 318i, 320i, 325e, 528e, 528i, 530i, 533i, 535i, 630Csi, 633Csi, 635Csi. 730i and 733i Model Vehicles. Please I.D. By Sight Related part#s are 6571, FTE20, G737-1, 40011, 072-0946 and 21.52.1.116.300. This item is in Near Mint Condition after many years of dry warehouse/parts room storage! Please study photos carefully, check with club or dealership specs and your measurements, ask any questions and double check/compare your actual needed part# to our listing prior to bidding. All NOS parts are subject to some possible deterioration, oxidation and shelf-ware from age and long term storage. For this reason we can offer NO Warranty on New Old Stock Parts!