Borg Warner S257SX-E – 57mm Enhanced S200SX-E 7670

BorgWarner AirWerks S200 SXE 7670 aka S257SX-E - 12769095003
Utilizing the latest generation aerodynamics, billet EFR compressor wheels, and uprated 360 degree thrust assemblies, BorgWarner’s all new ‘SX-Enhanced’ turbos redefine performance, durability and value for modern turbochargers.

BW utilizes their 70mm Inconel turbine wheel with 57.2mm inducer / 76mm exducer FMW compressor in a purpose built S200 SXE compressor housing. Smaller overall packaging than the EFR7670 with identical airflow rates make this an excellent match for the 400-600hp range (up to 2.6L) or as twin turbos in 700-1100hp applications. Oil-Cooled Journal Bearing only.

Compressor Specifications
Compressor Wheel Exducer: 76mm
Compressor Wheel Inducer: 57.15mm
Max Flow Rate: 64 lbs/min
Max Recommended Turbo Speed: 560 m/s

Compressor Housing Connections:
Inlet: 3.5″ Hose Coupler
Outlet: 2.0″ Hose Coupler

Turbine Specifications
Turbine Wheel Exducer: 61.43mm
Turbine Wheel Inducer: 70mm

Housing Size and A/R ratio: S257SX-E 7670 is available in six (6) different turbine housing configurations:
0.83 A/R Divided T3 Twin Scroll Inlet
1.00 A/R Divided T3 Twin Scroll Inlet
1.09 A/R Divided T3 Twin Scroll Inlet
1.15 A/R Divided T3 Twin Scroll Inlet
1.22 A/R Divided T3 Twin Scroll Inlet
1.27 A/R Divided T3 Twin Scroll Inlet
**Can Be Hand Ported to Divided T4 – See Install Tab**

Turbine outlet: 3″ Marmon or Optional 3″ V-Band Upgrade ($150)

BorgWarner’s S200 SX-Enhanced 57mm Turbo Features:
57mm Forged-Milled EFR7670 compressor wheel, optimized aerodynamics
3.5″ inlet / 2″ outlet compressor housing with new aero, integrated speed sensor port and pre-machined boost port
All-new severe duty 360 degree thrust bearing
Interchangeable with existing turbine housings
Inconel 70mm turbine wheel, same blade shape as EFR7670
Airwerks® Series Turbochargers
Simple. Scalable. Strong.

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.