View Full Version : 99 A4 Quattro 2.8 30V Air box

06-11-2014, 09:15 PM
I'm sure this is talked about in a thread somewhere, but I'm not coming up with anything(probably not wording the search right). Anyway, can anyone tell me what the hard plastic hose that comes off the front, bottom of the air box is supposed to go to? I've looked from the top and had the car on ramps but cannot see where it would connect to. Thanks in advance!

09-29-2016, 08:41 PM
It goes down to the air pump located behind the right ( passenger side ) fog
Lamp. It helps pump fresh air while engine is warming up

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