This is the V-Band turbine outlet kit for Garrett GT47 and GT55 G55 G57 turbos along with the Borg Warner S500 and S500SX-E with a Half Marmon 5.16 OD flat flange.  Includes V-Band clamp and billet 304 stainless steel weld flange that allows a 5" OD tube to slip fit inside for extra strong weld.