You can only get that from a dealers, I got the exact same one from a VW dealers. About a month ago so they do have them for order.
It was only £12. Its the oil crankcase breather pipe.
It should have the serial number on it but from my receipt its part number 037103493ab.
You can replace it with two seperate hoses, one from crank to pcv and another from pcv to inlet but for twelve of the queens finest its cheap enough.
When doing it id recommend taking off the bottom hose also, which just has a pull clip, and running a hose through it to get rid of any sludgy old oil before you put the new one back on.