Turbosmart GenV ALV40 Anti-Lag ValveListing is for: Turbosmart GenV Anti lag Valve Valve Seat Inlet and Outlet V band Clamp Inlet Hose Adapter 1 1 2" OD Inlet Weld Flange 1 1 2" OD C Spanner Collar Tool Inlet O ring Turbosmart Decal The Turbosmart ALV40 (Anti Lag Valve) is a fresh air anti lag bypass valve for motorsport applications. Featuring a 40mm valve diameter and a purpose designed actuator housing. Multiple fittings are also supplied for ease of fitment and fabrication. The