Fab Pros Oil Return (Oil Drain) Fitting for Borg Warner EFR Turbos 6258, 6758, 7163, 7064, etc. This Fitting is compatible with all published EFR Turbo models including: The EFR 6258, 6758, 7163, 7064, 7670, 8374, and 9180, etc. Exceptionally high quality aircraft aluminum Flange machined from billet and USA MADE! Screws right into the 2-bolt oil drain port on any EFR turbo and comes with the oil return gasket and 2 bolts. Connection at the end of the flange: -10 AN Male This allows you to screw a -10 AN steel braided line directly into the drain of the turbo Another high quality part made for FABRICATION PROS.