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Hydraulic to Vaccum servo conversion

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  • Cabriolet has a vacuum system, the hydraulic system was only fitted to the 5-pots.

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    • Here is another option

      https://www.s2forum.com/forum/member...conversion-kit
      Panthero Coupé quattro 20vt
      Indigo ABY coupé
      Imola B6 S4 Avant

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      • Originally posted by running_cold924 View Post
        Would one for a urs4/6 work? I just did this conversion to my car, used one from an a6.
        Do you have a part # by any chance

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        • 4A0612105 is what I used. I do have a fresh rebuilt one too.

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          • This part # doesn't bring back any results ...
            I found 4A0 612 107 A
            A6 from '95 to '98 ?

            Thanks

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            • This was directly off a 96 a6 with the 2.8. I think the last letter is P. Was very worn when I purchased it. Here is another

              https://www.ebay.co.uk/itm/Brake-boo...cAAOSwT4ZbFwjJ

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              • Just to be clear, LHD and RHD have different considerations for the vacuum conversion.

                The RHD cars can only use the smaller diameter servo/booster due to proximity to the turret, so be sure you are buying the right parts.
                Panthero Coupé quattro 20vt
                Indigo ABY coupé
                Imola B6 S4 Avant

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                • Originally posted by running_cold924 View Post
                  This was directly off a 96 a6 with the 2.8. I think the last letter is P. Was very worn when I purchased it. Here is another

                  https://www.ebay.co.uk/itm/Brake-boo...cAAOSwT4ZbFwjJ
                  Thanks buddy

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                  • No problem. Like I said I have an extra, just rebuilt. If you are in Canada I can ship it to you. I had 2 used ones leak on me (sucking vacuum around the center bore seal) and finally found a good reman version. If interested just send me a PM.

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