The BorgWarner EFR B1 turbine housing fits 63mm EFR turbochargers, built in a 0.85 A/R with a V-band turbine inlet and V-band outlet flange (VOF). This is a free-float, non-wastegated (Non-WG) housing. 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.
Specifications
| Series | EFR B1 |
| Turbine Wheel | 63mm |
| Turbine Inlet | V-Band (VOF outlet) |
| A/R | 0.85 |
| Design | Single-scroll, free-float |
| Wastegate | None (non-wastegated) |
| Material | Stainless steel |
| Part Number | 11631008003 |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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