radiator flush service

Hole in 2001 VW Passat engine part: what is it? (pictures)-and the links work now!?

I was changing the battery in my 2001 VW Passat and noticed a hole in an engine piece. It's black, one piece that seems to link a couple of different things. Maybe part of the air intake system? Links to pictures below.
http://i509.photobucket.com/albums/s332/


That is the breather hose on the back of the Valve Cover.

The reason it gets mushy like that is because the Suction Jet Valve(PCV) is clogged. You need to replace the "breather hose" and the "Suction Jet Valve" or the

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