3" 4 Bolt To 3" V Band Adaptor Turbo Exhaust Flange T3 GT3582 GT35 Cast Flange AdaptorExtremely strong casting3" inner center on 4 bolt side3" inner center on V-band side3.25" outside diameter V-band flange ( must be use with 3" V-band clamp and adapter)can also use it as 3" V-band to 3" 4 bolt adapter3" 4 bolt to 3" V-band conversion flange turbo adaptor (CAST)These adapters allow easy transition from the GT 4-bolt discharge on GT housings to industry standard 3" V-Band. 4-Bolt to V-Band adapters make installing and removing a from a turbo a cinch.Now all you need to do to install/remove is simply remove a single V-band Clamp.Specification:Itenm Name: 4-Bolt to V-Band adapterApplication For T25/T28,T3 T4 Turbocharge FlangePackage Includes:1 Piece 4-Bolt to V-Band adapter