Pressure regulating valve that bolts to front of head, also called the PCV valve.

If you are experience a loss of boost and also oil around the oil cap then theres a good chance your factory PCV valve is shot. Replace it with this updated VW/Audi part to get things running how they should be.

NOTE: When replacing with this version it is required that the breather hose must also be changed with part number 06F103215A

FITS: 2006-2008 Audi A4 2.0T - Fits from last six of Vin #165001-999999, split is in model year 2006

Ships in 1-3 days.