Stainless steel V-Band outlet kit for the standard BorgWarner AirWerks S200SX / S200SX-E / S300SX / S300SX-E turbine housings with T4 manifold flange. 3" V-Band Turbine Outlet Kit for BorgWarner S200SX / S200SX-E / S300SX / S300SX-E Fits for the standard BorgWarner T4 turbine housings Perfect for manufacture a downpipe This is the V-Band outlet kit for Borg Warner S200 and S300 turbos with the "4.21 Marmon" outlet. This includes the V-Band clamp and stainless steel weld flange that allows a 3" OD tube to slip fit inside. Yes, you read the description correctly, we have created an industry standard 3" outlet kit for the popular S200SX / S200SX-E / S300SX / S300SX-E turbos for the factory BorgWarner T4 turbine housings. The OD of the flange is 4.21 and it is tapered. Material : Stainless Steel Inner diameter : 3" / 76mm Fits for: BorgWarner AirWerks S200SX / S200SX-E / S300SX / S300SX