Check the listing for details. Universal Aluminum 50mm Blow Off Valve Dump Valve BOV with V-band Flange Black. Color: Black, Condition: New. Listed at 35.99 USD. LoKoCar is the highest flowing BOV on the market, CNC machined to the finest tolerance with the highest grade T6061 aluminum alloy. Countless hours of R&D resulted in a blow off valve that can flow a staggering 60% more than competing designs. This design is vital for the health of your turbo or supercharger under high boost applications. The BV50 features a large 1.98" (50.5mm) valve with a Viton O-ring that is clamped in place to prevent the possibility of sticking. The valve stem and guide are PTFE-lubricated and hard anodize-coated for longevity. The V-band aluminum mount and stainless steel clamp give a clean, long-lasting and corrosion-free installation. An over-sized 10mm banjo-style fitting provides for quicker actuator response. The actuator has a high temperature silicone Nomex-reinforced diaphragm for long life and reliability. This BOV is a must-have for hard-core racing enthusiasts! Pakcge Included: (1) LokoCar BV50 Style 50mm Blow off Valve (1) 50mm Aluminum Weld-On Flange (1) V-Band Clamp (1) O-Ring (1) 18psi Spring (Installed on BOV) (1) 6psi Spring (Extra) (1) High Flow Banjo-Style Bolt Kit Please Note: The are no instructions included in this kit. Professional installation is recommended.