S139 T25 Airwerks Turbo By BorgWarner (313296)

Borg Warner
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BorgWarner 39/46 S1BG-39 Turbocharger

Airwerks turbochargers are designed for the competitive motorsports market as well as drivers retrofitting a naturally aspirated engine or looking for a little more performance from a factory turbocharged car.

Engineered specifically for drag racing, pulling and road racing, AirWerks turbochargers have earned a reputation as robust, brute-force induction systems. Looking for a no-frills replacement? Want to upgrade your turbocharger? Working with limited space?

BorgWarner's AirWerks turbochargers are the perfect go-to product for many applications. With a twin hydrodynamic journal bearing design, AirWerks turbochargers feature an effective high-pressure ratio compressor stage, extended-tip technology and a high-efficiency turbine stage. The configuration provides ultra-fast response and more than 70 PSI of boost.


  • Straight Compressor Discharge
  • Twin Hydrodynamic Journal Bearings
  • T3 Bolt Pattern Volute Size Inlet Connection
  • Adjustable Compressor and Turbine Housing Orientation


  • 120-320HP
  • 39.32mm Comp. Wheel Inducer Dia.
  • 53mm Comp. Wheel O.D.
  • 53mm Turbine Wheel O.D.
  • Turbine Housing Options: .46, .61

Also Known As

  • S1BG, S1BG-39 39/46, 39-46, 53/53, 53-53, 39mm

What's in the Box?

  • 1 T25 39/46 S1BG Turbocharger


  • 1-Year Manufacturer's Warranty

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