SKU: 179357 | UPC: 840232704464
BorgWarner Turbo EFR B2 8374 0.92 a/r VTF WG - Fits 2002-2021 Subaru WRX/STI, Evo, Mazdaspeed3
The BorgWarner EFR 8374 turbocharger delivers reliable power for 330-550 HP engines in performance applications. This Gen2 ball bearing unit with 0.92 A/R V-band turbine housing and integrated wastegate suits Subaru Impreza WRX/STI, Mitsubishi Lancer Evolution, Mazda3 Mazdaspeed3, and custom setups. It provides fast spool-up, broad powerband, and efficient airflow for street and track use.
Key Features
- Dual Ceramic Ball Bearings: Gen2 cartridge cuts friction for spool under 3000 RPM and supports 150,000 mile durability
- Gamma-Ti Turbine Wheel: 74.5/64.4 mm Inconel blade design resists 1050C heat with low inertia for responsive response
- Forged Milled Compressor Wheel: 57.4/74 mm inducer/exducer 60 trim resists surge and flows 54 lb/min for full boost efficiency
- Integrated Boost Solenoid: Factory boost control port enables precise pressure management without extra parts
- V-Band Housings: T5 V-band inlet and 3" V-band outlet allow fast clamp connections and manifold adaptability
Product Notes
- Use 1/8 NPT oil restrictor (0.028-0.040 inch) in feed line to prevent bearing washout
- Water cooling recommended for longevity. M14x1.5 ports provided on CHRA
- Fully assembled with speed sensor port. hardware like V-clamps sold separately
Installation Notes
- Professional installation recommended.
- Oil feed M14x1.5 dry sump style. drain -10AN minimum with catch can
- V-band turbine inlet fits T5 divided flanges. verify manifold clearance
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2021 | Subaru | Impreza | WRX / STI |
| 2003-2006 | Mitsubishi | Lancer | Evolution VIII / IX |
| 2007-2009 | Mazda | 3 | Mazdaspeed3 |
| 2006-2013 | Volkswagen | Golf / GTI | 2.0T FSI / R |
| 1993-2002 | Mazda | RX-7 | FD 13B-REW |
Why Choose BorgWarner?
- Direct OEM supplier for Ford EcoBoost and VW TSI engines worldwide
- EFR line proven in NHRA Pro Stock and World Rally Championship
- Investment cast 310SS housings with CNC machining for exact tolerances
Frequently Asked Questions
-
Q: Will this bolt up to my Subaru STI EJ257?
A: Universal design works with STI TD05/TD06 adapter kits from Full Race or similar. check hood clearance and downpipe fit -
Q: What materials are used in construction?
A: Compressor cover Ni-Resist for heat, turbine housing NiAl plated 310SS, CHRA investment cast stainless -
Q: What warranty coverage applies?
A: 24-month unlimited mileage limited warranty when installed by certified shop with proper oiling
Shipping & Handling
- Method: Standard Ground
- Availability: In stock - ships same or next business day
- Packaging: Double-walled cardboard box 16in L x 14in W x 14in H
- Weight: 17.6 lbs product / 22 lbs shipping
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