GT40-GT55 Billet Turbo Oil Return Drain Flange Garrett T4 GT40 GT42 GT45 GT47 1/2npt T04B T04E 551161 T4 (Fits Garrett GT40-GT47) 1/2" NPT 2" Bolt Spacing Includes (1) Drain Flange, (1) Gasket, (2) Bolts