What is this part?

Discussion in 'B6 platform' started by James Dirkin, Dec 5, 2012.

  1. James Dirkin Member

    Removed the left hand side trunk panel and found this in the bottom, any idea what it is and what it does? I have seen other cars which don't have this part in them?

    It's a euro b6 s4 saloon


    The blue ball thing is what I'm questioning...
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    PetrolDave Super Moderator

    Looks like a vacuum reservoir to me.
  3. James Dirkin Member

    for what though? only other place i have seen them is on ebay.de and google translate has no translation for the part, also they are all listed under rs4 none under s4... few people on other forums with s4 have never seen them either?
  4. James Dirkin Member

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    PetrolDave Super Moderator

    The routing of the pipes looks messy and not like an Audi OE fitment, so I'm guessing it was fitted by a previous owner?
  5. James Dirkin Member

    From what others have said its the chamber for the exhaust flaps?
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    PetrolDave Super Moderator

    The S4 doesn't have exhaust flaps.
  6. James Dirkin Member

    That's what I thought... Hnmmm I'm even more confused now :-/

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