SKU: 12747100023 | UPC: 840232712155
BorgWarner SuperCore Assembly EFR B2 9274 (Cast Iron B. Hsg) – Universal High HP Turbo Build
The BorgWarner EFR B2 9274 SuperCore Assembly powers custom turbocharger builds for racing and high-performance street cars targeting 900 to 1100 horsepower. This ball bearing CHRA with cast iron bearing housing fits a wide range of modified engines where maximum airflow and response matter. Build your turbo with matching EFR compressor and turbine housings for peak efficiency.
Key Features
- Ball Bearing CHRA: Dual ceramic ball bearings cut friction for spool times under 3000 RPM and support 200000+ RPM operation
- Compressor Wheel: 67mm inducer 91mm exducer FMW aluminum wheel with extended tips flows 110 lb/min of air
- Turbine Wheel: 84mm inducer 74mm exducer Gamma-Ti Inconel wheel handles extreme EGTs over 1050C
- Cast Iron Bearing Housing: Robust construction with integrated water cooling ports and M12x1.5 oil feed for reliable lubrication
- B2 Frame Size: Compact design measures 5.7 inches diameter for tight engine bay packaging
Product Notes
- SuperCore requires separate EFR 9274 compressor cover and turbine housing to complete assembly
- Special order part non-returnable once ordered confirm compatibility first
- Securely packaged to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Oil feed M12x1.5 restrictor required based on engine oil pressure
- Compatible with EFR T4 divided or T5 undivided turbine housings and A/R 0.58 to 0.73 compressor covers
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1993-1998 | Toyota | Supra | Turbo (2JZ-GTE) |
| 1989-2002 | Nissan | Skyline GT-R | R32/R33/R34 (RB26DETT) |
| 2008-2016 | Mitsubishi | Lancer Evolution | X (4B11T) |
| 1997-2004 | Chevrolet | Corvette | C5 (LS1) |
| 2005-2013 | Chevrolet | Corvette | C6 (LS2/LS7) |
| Universal | Various | Custom Builds | LS/2JZ/RB/4G63 |
Why Choose BorgWarner?
- Proven in IMSA World Challenge and NASA racing series
- OE-grade materials withstand 1000+ HP daily drivers
- Precision machined tolerances for balanced operation
Frequently Asked Questions
- Q: What components are included in the SuperCore?
A: Ball bearing cartridge compressor wheel turbine wheel and cast iron bearing housing ready for housings - Q: Is the bearing housing water cooled?
A: Yes features dual water ports for coolant circulation plus oil ports for full thermal management - Q: What warranty applies?
A: 12-month unlimited mileage warranty against defects with proof of professional installation
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective carton 15 x 15 x 15 inches
- Weight: 22 lbs shipping weight
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