No, I was needing rebuild info for the booster and was wondering what the designation A is... My BMW has 1 tag that says 633 CSi A and another one that just says 633 CSi, Mine definetly isnt automatic. I was wondering because I am making a detail board to put beside my car when I show it and needed to know to find the right quantity of each model built. There were different quantities of the "A" than the regular series. Seems even the local BMW dealer here dont know of any rebuild kits or can even give me O-ring sizes or anything else, guess I will have to tear it all down, get out the micrometerand find them myself. Sure glad I have a spare vehicle to drive.....