> -----Message d'origine----- The part number of the master cylinder is 441-611-021A, not > sure what car it is from. > > Jon With my new found parts software (Bosch ESI), your 441-611-021A translate to 0-986-480-826, which is a 25.40mm M/C for a Coupe Quattro 90-91 (7A engine), among others. HTH, Louis-Alain