This listing is for One(1) Never Previously Installed, Brand New Factory Type Vacuum Pump Rebuilding/Repair Valve and small Diaphram Kit! Application are believed to be but not positive, are Many the 1977 thru 1992 Audi, Volkswagen and Volvo Diesel Model Vehicles? Relate part numbers are 068 198 819, 187 54001 and 100 198 0004. (Please Study photos carefully and Check the eBay catalog to be exact on your particular application). Please check all the many photos carefully, compare to your part and research the available part numbers to confirm your correct application. There may be more than one part number used on stated model vehicles. Thanks for looking and Please be sure to check out our various other interesting vintage imported parts listed in our Ebay Store!