Help - Torn Pipe/Valve advice needed

[Ash4d]

Hi,

The other day I lifted the bonnet and realised there was a loose valve/pipe.
I do not know what it is, so I was wandering if you guys can help me out here.

What is it used for?
Is it Costly?
Would I need to take it to Audi to get it sorted?

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Your help on this would be much appreciated.


Thanks

Ash

 

[Ash4d]

Ooops forgot to mention it's an Audi A4 (2005) 2.0 Petrol

Ash