It's not #20. It's the hose which connects to this red circle.
Thank you. That's it.check my post here to look up parts and numbers
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etka aka car diagrams and part numbers
Saw this in another part of the forum. really helpful IFInterface click “Welcome” then “Free Services” at top, then “CarProg2” on the left and then select “Audi” and model, etc…. Should be easy to figure from there I have a euro spec Mk3 here in the USA (ABF engine) and this has been VERY...www.vwvortex.com