Billet Aluminum Check Valve

Its robust construction features a CNC-machined billet aluminum housing, ensuring durability and longevity. It includes a stainless steel ball-bearing and spring for reliable operation and can handle pressures of 100 PSI or more. The unit has a 1/2" nipple on the pressure side and a 1" OD nipple on the vacuum side, making it suitable for universal applications where pressure needs to be controlled in a specific hose or chamber. The valve is specifically listed to fit numerous Audi and Volkswagen models, including the Audi AAN I5 20VT, various 1.8T engines, and the Audi 2.7T. Specific fitments include the 1982-1987 Audi UrQuattro, 8N (1999-2002) Audi TT (AWP Engine Code Only), B5 (1997-2001) Audi A4 1.8T, B5 (2000-2002) Audi S4 2.7T, B6 (2002-2005) Audi A4 1.8T, C4 (1992-1994) Audi S4 2.2T, C4 (1994-1997) Audi S6 2.2T, C5 (1998-2001) Audi A6 2.7T (APB Engine Code Only), C5 (2003-2004) Audi RS6 4.2T, and Mk4 (1999-2005) Volkswagen Golf/Jetta/New Beetle 1.8T. It also fits other VAG models and can be used universally where a similarly-sized ball-style check valve is needed.