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BorgWarner Turbo EFR B2 8374 0.83 a/r VO WG - Black Ops Auto Works
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BorgWarner Turbo EFR B2 8374 0.83 a/r VO WG

BorgWarner
BWA179258
840232702934
Turbochargers
Out of stock
$ 3,711.71 $ 2,947.77

SKU: 179258 | UPC: 840232702934

BorgWarner Turbo EFR B2 8374 0.83 A/R V-Band WG 04-21 Subaru WRX STI

The BorgWarner EFR B2 8374 turbocharger delivers responsive boost with its T3 divided 0.83 A/R turbine housing V-band outlet and integrated wastegate. It fits 2004-2021 Subaru WRX and STI models plus other performance builds requiring quick spool and power up to 450HP. Ball bearing design and high-flow compressor ensure broad powerband for street and track.

Key Features

  • Dual Ceramic Ball Bearings: Supports over 200000 RPM for minimal friction and rapid spool under 3000 RPM
  • Forged Milled Compressor Wheel: 57.4mm inducer 74mm exducer flows 57 lb/min for efficient airflow in 250-450HP range
  • Gamma-Ti Turbine Wheel: 60mm inducer 55mm exducer resists heat for sustained high-RPM performance
  • Integrated Boost Solenoid: Factory boost control port enables precise tuning without external valves
  • Ported Compressor Housing: Anti-surge design prevents compressor stall during throttle transitions

Product Notes

  • Special order processing may add 1-2 days before shipment
  • Tuning required for optimal boost levels and air-fuel ratios
  • Oil and water lines included for CHRA cooling

Installation Notes

  • Professional installation recommended.
  • T3 divided manifold flange required for direct bolt-on
  • V-band clamps and gaskets sold separately for turbine outlet

This Part Fits

Year Make Model Submodel
2004-2021 Subaru Impreza WRX STI
2002-2007 Subaru Impreza WRX
2003-2006 Mitsubishi Lancer Evolution VIII IX
2007-2016 Mitsubishi Lancer Evolution X
2007-2013 BMW 3 Series 335i

Why Choose BorgWarner?

  • Direct OEM technology from global racing supplier
  • EFR series dominates endurance racing with proven durability
  • Precision Swiss manufacturing for consistent fit and flow

Frequently Asked Questions

  • Q: Will this bolt onto my 2015-2021 Subaru WRX?
    A: Yes with T3 manifold adapter and custom downpipe common in STI swap kits for direct compatibility
  • Q: What material construction does it use?
    A: Nickel-charged compressor housing investment cast turbine housing and Gamma-Ti turbine wheel for heat resistance
  • Q: What warranty coverage applies?
    A: 1-year unlimited mileage from BorgWarner covers defects in materials and workmanship

Shipping & Handling

  • Method: Standard Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Foam protected in 16 x 16 x 16 inch box
  • Weight: 22 lbs

Request For Information

Have questions about BorgWarner Turbo EFR B2 8374 0.83 a/r VO WG? Fill out the form below and we'll get back to you by the next business day.
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