SKU: 179150 | UPC: 840232700503
BorgWarner Turbo EFR B1 6258 0.64 A/R V-Band WG 2002-2021 Subaru STI WRX Mitsubishi Evo
BorgWarner EFR B1 6258 turbocharger features a T4 divided 0.64 A/R turbine housing with V-band wastegate outlet for fast spool and strong mid-range power in 1.8L-3.0L engines. This ball bearing turbo fits Subaru WRX STI Mitsubishi Lancer Evolution and other performance vehicles delivering up to 475 HP with 44 lb/min compressor flow. Oil and water-cooled CHRA ensures reliability under high boost.
Key Features
- Ball Bearing CHRA: Dual ceramic ball bearings reduce friction for spool under 2000 RPM and support 150000+ RPM operation
- Gamma-Ti Turbine Wheel: 58mm inducer lightweight titanium alloy withstands 1050C exhaust temps for durability
- Forged Milled Compressor Wheel: 62.4mm inducer 68.1mm exducer extended-tip design flows 44 lb/min at 40+ psi boost
- T4 Divided 0.64 A/R Housing: Balances low-end response and top-end power with V-band inlet outlet and internal wastegate
- Integrated Speed Sensor Port: Allows monitoring and tuning for precise boost control
Product Notes
- Universal fit requires T4 divided manifold and custom intercooler piping
- Oil feed M12x1.25 cool water M14x1.5 fittings needed
- Ships via standard ground freight
Installation Notes
- Professional installation recommended.
- Match T4 divided flange on exhaust manifold
- Includes V-band clamps and gaskets for turbine housing
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2021 | Subaru | Impreza | STI |
| 2003-2005 | Mitsubishi | Lancer | Evolution VIII |
| 2006-2006 | Mitsubishi | Lancer | Evolution IX |
| 2008-2015 | Mitsubishi | Lancer | Evolution X |
| 2017-2021 | Subaru | WRX | STI |
Why Choose BorgWarner?
- Supplies turbos to Formula Drift NHRA and OEM automakers
- Proven 270-475 HP range in motorsport applications
- Precision machined components for consistent performance
Frequently Asked Questions
- Q: Will this turbo bolt onto my Subaru STI manifold?
A: Requires T4 divided adapter or aftermarket manifold common for STI WRX Evo swaps - Q: What material is the turbine housing?
A: NiResist high-silicon ductile iron resists heat and corrosion - Q: What is the warranty coverage?
A: 12-month unlimited mileage when installed by certified shop with proper oiling
Shipping & Handling
- Method: Standard ground
- Availability: In stock – ships same or next business day
- Packaging: Protective carton 20x18x16 inches
- Weight: 22 lbs
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