SKU: 179393 | UPC: 840232705188
BorgWarner Turbo EFR B2 8374 1.05 a/r VTF | 225-550 HP Performance Turbocharger
The BorgWarner EFR B2 8374 1.05 A/R VTF turbocharger delivers high airflow and fast response for demanding performance builds. It supports engines from 1.8L to 3.0L producing 225 to 550 horsepower, ideal for Subaru WRX and STI, Volkswagen Golf R, Mazdaspeed3, and custom setups. Advanced dual ball bearing design ensures reliable boost with minimal lag across the powerband.
Key Features
- Dual Ceramic Ball Bearings: Reduces friction for spool-up under 2000 RPM and supports over 200,000 RPM operation
- 57/71mm Billet Compressor Wheel: Flows 57 lb/min air for strong mid-range torque and top-end power without compressor surge
- 67mm Gamma-Ti Turbine Wheel: Resists 1050C exhaust temperatures for long life in high-heat conditions
- 1.05 A/R Divided V-Band T4 Housing: Provides balanced spool time and exhaust flow for street and track use
- Water-Cooled CHRA with Speed Sensor Port: Enables precise monitoring and cooling for consistent performance
Product Notes
- Requires oil and water lines for lubrication and cooling during operation
- Pair with proper tuning for safe boost levels up to 550 HP
- Rebuildable SuperCore design allows field servicing
Installation Notes
- Professional installation recommended.
- Needs T4 divided exhaust manifold and V-band compatible downpipe
- Includes V-band clamps, gaskets, and hardware for turbine housing
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2021 | Subaru | Impreza | WRX |
| 2004-2021 | Subaru | Impreza | STI |
| 2015-2021 | Volkswagen | Golf | R / GTI |
| 2007-2009 | Mazda | 3 | Mazdaspeed3 |
| 2006-2013 | Audi | A4 | 2.0T Quattro |
| Universal | – | Custom Builds | 1.8-3.0L Engines |
Why Choose BorgWarner?
- Leads OEM turbo production for millions of vehicles worldwide
- EFR series powers wins in Formula Drift and rally racing
- Investment-cast housings and billet components ensure precision fit
Frequently Asked Questions
- Q: Is direct bolt-on fitment available for my vehicle?
A: Universal design fits with custom T4 manifold, intake piping, and downpipe. Popular for Subaru EJ25, VW 2.0T, and similar swaps - Q: What materials are used in construction?
A: Nickel-chrome compressor housing, 310 stainless steel turbine housing, Gamma-Ti turbine wheel, and billet aluminum compressor wheel - Q: What warranty coverage applies?
A: 12-month unlimited mileage warranty from BorgWarner when installed and maintained correctly
Shipping & Handling
- Method: Standard ground freight
- Availability: In stock – ships same or next business day
- Packaging: Secure double-walled box 16 x 16 x 16 inches
- Weight: 20 lbs product / 25 lbs shipping
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