TiAL's brand new QR recirculating bov is now available in all colors and also available with a new 1.3" Mitsu-Style outlet (pictured). - Q R BOV Assembly - TiAL V-Band Clamp - V-Band Weld Flange - High Pressure O-Ring - TiAL Air Fitting - Made in the USA. ** Measure engine vacuum at idle. (engine at operating temperature)