Have a mad vacuum leak coming from this hose right here. 2001 audi a4 1.8t

 

Looks to me like this little guy.

 

save yourself a couple bucks and just replace it with rubber hose from the auto parts store

 

Audi B5 A4 Quattro 1.8T > Engine > Emissions > ES#6707 Breather Hose - 06B133783BC

 

I thought about the same thing when mine cracked, and from what i read they tend to crack a lot. The new hose i bought from the warehouse was much thicker and had a much stronger material to it. Compared to the ones they sell at auto zone, those look pretty weak and at that angle i figured it would only be a matter of time until it cracked again. Just my 2 cents.

 

Thanks Guys! did a google search with the part number 06B133783BC and it looks like the right one. Ordered it. Hopefully this fixes a few problems