Billet T4 T6 Turbo Oil Drain Flange 10AN w/ Oring Seal This Turbo Drain Flange solves all of the shortcomings of traditional drain flanges with paper gaskets and small orifices. Starting from scratch we designed a flange that will fit midframe and smaller turbos from Precision Turbo, Garrett, Borg Warner, On3, VS Racing, Comp, Bullseye, CX Racing and more! These are designed to fit Some T3, T4, and mid frame T6 and smaller. For Large Frame and GT55 based turbos, please see our other flanges as this is too small. Please reference the bolt spacing remark below to make sure this item will fit your turbo. Features include: Billet CNC from 6061 T6 Aluminum High temp Oring Seal (to obsolete the old paper gaskets) Oring Groove cut with dove tailcutter so that oring is retained and cannot fall out 10AN Male Connection Tapered Funnel Drain design to open up flow Large Bore ID 10AN design allows for high flow Made in the USA *Does Not Come with Any Hardware ** 2 inch center to center bolt hole spacing