BOV Plumb Back Audi / VW TFSI from Turbosmart Kompact Blow Off Valve Plumb Back Audi / VW Plumb Back BOV Fits to: Audi A3 / A4 / A6 1,8 / 2,0 TFSI 2004-, TT 2,0 TFSI 2006- VW Golf 5 2,0 Gti 2003-2009, Golf 6 / 6R 2,0 Gti 2009-2013, Kompact VAG Plumb Back has been specifically to suit the 2.0L VAG engine Unlike the standard, plastic valves that use un-reinforced diaphragms and are known to crack under increased boost, the new Kompact VAG V2 Plumb Back uses O-Ring sealed piston which, coupled with it"s billet aluminium construction give it over 30PSI boost handling capability. Included with each Kompact VAG Plumb Back kit: Model specific valve, Mounting screws and Spring clamps.