Tial 50mm Blow Off Valve Weld Flange for 4.00in

The Tial 50mm Blow Off Valve Weld Flange for 4.00in from Vibrant Performance is a precision-engineered intake manifold component designed for turbocharged and supercharged engines requiring reliable boost pressure control. This weld-on flange serves as the mounting interface between your intake piping and a Tial-style blow-off valve, enabling proper recirculation or atmospheric venting of excess boost pressure when the throttle closes. Built for serious enthusiasts and tuned vehicles, this aluminum flange ensures consistent valve seating and durability under high-boost applications where factory intake systems cannot manage elevated air demand.

This weld flange is manufactured from lightweight aluminum and features a natural finish, optimizing strength-to-weight ratio while resisting corrosion in engine bay environments. The 4.00-inch tube diameter accommodates standard intake piping, and the 50mm bore is sized to match Tial blow-off valve specifications, ensuring proper valve operation and minimal boost loss during engagement. The weld-on design allows permanent installation into custom intake fabrication, eliminating connection failures common with clamp or bolt-on systems and providing a clean, sealed interface that prevents boost leakage and maintains system integrity under sustained high-pressure conditions.

This component is ideal for custom engine builders, turbo-upgrade installations, and performance tuners seeking reliable blow-off valve integration on engines ranging from import platforms to domestic V8s requiring integrated boost control. Proper installation requires welding to the intake pipe and is best performed during initial manifold or piping fabrication to ensure clean joints and safe pressure handling. Compatibility depends on your intake design and Tial-style valve selection—verify your specific turbo configuration and boost target before purchase to confirm this flange matches your system's diameter and valve specifications.