The BorgWarner EFR B2 turbine housing fits 74mm EFR turbochargers, built in a 0.92 A/R with a divided T4 twin-scroll turbine inlet. It is supplied with the wastegate actuator assembly fitted (WG Assy). Cast from stainless steel for high exhaust-gas temperature capability and durability on the street or track, it bolts to the EFR center section to complete the turbine side.
| Series | EFR B2 |
| Turbine Wheel | 74mm |
| Turbine Inlet | Divided T4 (twin-scroll) |
| A/R | 0.92 |
| Design | Twin-scroll |
| Wastegate | Internal, wastegate assembly included |
| Material | Stainless steel |
| Part Number | 12741008001 |
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