Billet aluminum oil drain / return flange for T3, T3/T4, or T04 turbochargers. Designed to be used with 8mm thread x 1.25 pitch bolts to bolt to turbo. Flange is tapped in the center with 1/2" NPT for use with any 1/2" NPT to -10 AN fittings. Fits Precision Turbo 5857,6262,6765 etc.. Also used in larger BB turbos such as GT40R and GT42R..