BOV V-Band clamp assemblyBOV V Band clamp assembly The BOV V Band clamp assembly is a genuine Turbosmart blow off valve engineered to improve boost response, throttle lift control and reliability in high performance turbo applications. Turbosmart V Band Clamp Assembly is the perfect solution for Turbosmart Plumb Back, Dual Port, Supersonic and Vee Port Pro BOVs. It ensures a secure connection between your Turbosmart Blow Off Valve (BOV) and your turbocharger or intercooler