Standard 3" V Band (3.75" Flange OD) to 4" Pipe Machined Transition Vibrant T304 SS 4 Bolt Flange for 3in O.D. Oval tubing vib13175S T4 to 3 inch V Band Rotation Flange Adapter Kit w 44mm MVR Wastegate Vibrant 4 Bolt Flange 3in Round to 3in V Band Transition eBay Australia T4 to 3 inch V Band Rotation Flange Adapter Kit w 44mm MVR Wastegate. Vibrant Performance stainless steel turbo flanges are constructed entirely from 304 stainless steel and are designed with the turbo fabricator in mind. Vibrant Performance turbo flanges are available for all of the industry leading turbo chargers and are offered for turbo inlet, external Wastegate, and turbo discharge applications. Standard 4 bolt, V Band, divided, transition, complex multi bolt and block off turbo flanges are all available.