This crankcase vent valve breather hose kit includes the Crankcase Pressure Regulator Valve and 2 Breather Hoses. The crank case valve and hoses commonly crack overtime and lead to rough running, misfires, a check engine light (CEL), poor fuel economy, and sometimes smoking. This kit includes 2 hose or pcv pipe that connects to the intake manifold and intake tube at the rear. The positive crankcase ventilation valve can easily be located on top of the engine under the engine cover, the 2 hoses are found at the back and front of the PCV valve. Failure of this part can cause a lot of codes to pop up on when scanning the vehicle for problems including P0300, P0171, P0506, P0302, P0301, P0303, P0304, P119A, P2187 & more. Fits the following 2.0 Turbo TSI & FSI vehicles: 2008-2013 A3 8P 2.0T (CBFA, CCTA engine codes) 2009-2012 A4 B8 2.0T (must check VIN) 2010-2012 A5 B8 2.0T (must check VIN) 2011-2012 Q5 2.0T (up to prod 1/16/2012) 2009-2015 TT Mk2 2.0T (CCTA, CETA engine codes) 2012-2015 Turbo 2.0T 2009-2015 CC 2.0T 2009-2015 EOS 2.0T 2008-2009 Golf Mk5 GTI 2.0T (CBFA, CCTA engine codes) 2010-2014 Golf Mk6 GTI 2.0T 2008-2009 Jetta Mk5 2.0T (CBFA, CCTA engine codes) 2010-2015 Jetta Mk6 GLI 2.0T 2008-2010 Passat B6 2.0T 2009-2015 Tiguan 2.0T Replaces part numbers: 06H103495AH, 06H103495AC, 06H103495E, 06H103495A, 06H103495B, 06H103495AB This is a compatible replacement part manufactured by AA Ignition. This PCV kit is NOT a genuine OEM part. Vehicle makes and their associated vehicle models and part numbers are used in this listing only to identify the vehicles this PCV valve and breather hose kit fits.