GReddy Type R/RS/S Blow off valve mounting adapter to 1.50" hose clamp port. Allows easy mounting of an off-the-shelf Greddy BOV onto a standard hose connection. Billet aluminum and has an anti-slip "lip" to avoid sliding under high pressure. Unit is 100% bolt on and comes with interchangeable top hat for easy changout to difference valve types by just replacing new screw on hats. Same diameter as FWD 2.0T FSI noise pipe tee so this can be used to clamp to the existing port near the throttle body using a straight section of 1.50" diameter hose and two clamps.