| |  | | VW 1.8t Parts |  | 1.8T Billet Bypass Valve Kit: The Turbo XS Billet Bypass Valve Type 25 was specifically designed to replace 1 inch (25mm) Bosch Bypass Valve used in most Volkswagen Audi applications. The Bosch valve prone to failure in stock application not adequate for holding boost in "chipped" 1.8T equipped vehicles. The RBV-25 spring tension adjustable , making it ideal for your modified vehicle. The RBV-25 relieves pressure surge caused by changing gears or backing off throttle quickly. Engine cover might need to be trimmed to make space for installation. Kit Includes: - TurboXS Racing Bypass Valve 25 - Spring Adjusting Packer Washers - Installation Guide Will fit all 1.8T engine equipped vehicles. |  | Billet Bypass Valve: Billet Bypass Valve: The original diaphragm bypass valve can fail under high boost. The Turbo XS part will never fail fully adjustable to hold higher boost levels. Th makes your peak boost horsepower useable for longer periods. Application- Beetle / Golf & Jetta 1.8t (all) Audi A4 (S4 requires 2- parts) & Passat 1.8t ( all) |  | Bypass/Diverter valve , for Audi/VW 1.8T engines: A replacement blow off valve for any vehicle using plastic Bosch or Denso BOV. The 'Kompact' range has been designed engineered as a high flow drop in replacement for most European cars. Part sleek black color includes vacuum hose extension , vacuum hose adapters , hose clamps. Easily adjustable by turning knob on top of valve. Fits all VW/Audi 1.8T vehicles. Also fits Audi S4 A6 with 2.7T engine (two valves required for 2.7T installation). Unit much more compact than most valves on market. There are no clearance sues with engine covers. |  | Greddy Blow Off Valve Conversion: The EIP , Greddy "S" Blow off valve conversion for VW 1.8T 20v designed to be easily adjustable in order to prevent premature boost leakage. The Greddy Blow off valve made from cast billet aluminum uses two springs a adjustment screw in order to tune vehicle. Th upgrade suits both stock turbochargers heavily modified vehicles featuring large turbo conversions. Th high quality blow off valve produces desirable blow off valve "sound" while releasing excess boost pressure to protect your turbocharger from premature wear. Simple to install. Each Conversion Kit includes: (1) Greddy "S" Type blow off valve , (1) blow off valve flange , adapter , (1) B.O.V. gasket , (1) vacuum line , (1) recirculation hose. The Greddy Blow off valve conversion kit can be used ei r as a diverter valve (piped back into draw pipe) or as a blow off valve(open to atmoshpere). | |