The BorgWarner EFR B2 70mm turbine housing with 0.83 A/R is a T3 single-scroll assembly provided with a wastegate provision. Sized for EFR B2 turbine wheels, the 70mm inlet and 0.83 A/R geometry shape exhaust flow for setups favoring a larger inlet in a single-scroll T3 layout and include the necessary WG porting for external wastegate control.
BorgWarner Turbine Housing EFR B2 70mm .83 T3 Single Scroll WG Assy