Genuine VAG PCV Valve - 2.0TFSi (Revision R) - 06F129101R
This is a genuine OEM PCV revision R valve.
These are common to replace as they are prone to fail. When a PCV valve has failed it can cause vacuum and boost leak, it can also flag up with a fault code.
Indication that the PCV has failed can make a high pitch suction sound.
Does not come with the seal, this can be purchased seperately - seal part number is 06F103483E
Item number 18 on the diagram above
Please see the reccomended products below for other PCV related parts, PCV hoses, gaskets etc