Product Description
BorgWarner 177103 S400 Exhaust Housing 83mm T4 1.00 A/R Twin Scroll
The BorgWarner 177103 S400 Exhaust Housing 83mm T4 1.00 A/R is a genuine AirWerks S400 turbine housing engineered for performance diesel and racing applications requiring excellent spool characteristics, efficient exhaust flow, and durable construction. Designed for S400-series turbochargers utilizing an 83mm turbine wheel, this twin-scroll T4 housing features a 1.00 A/R ratio that provides an excellent balance between turbo response and top-end airflow.
Commonly used in custom Cummins, Duramax, and Power Stroke turbocharger builds, the BorgWarner 177103 turbine housing is ideal for enthusiasts looking to optimize spool-up while maintaining strong horsepower potential. Its twin-scroll design helps improve exhaust pulse energy, reduce turbo lag, and increase overall turbocharger efficiency in both single and compound turbocharger systems.
Features
- Genuine BorgWarner AirWerks S400 turbine housing
- Designed for 83mm S400 turbine wheels
- 1.00 A/R turbine housing ratio
- Twin-scroll divided T4 inlet flange
- Improves exhaust pulse energy and turbo response
- Excellent balance of spool-up and top-end airflow
- Durable high-temperature cast construction
- Direct replacement for compatible S400 turbochargers
- Ideal for custom single turbo applications
- Popular upgrade for compound turbocharger systems
Fitment
- BorgWarner AirWerks S400 turbochargers with 83mm turbine wheels
- Custom Cummins performance applications
- Custom Duramax performance applications
- Custom Power Stroke performance applications
- Single turbocharger systems
- Compound turbocharger systems
- Drag racing applications
- Sled pulling applications
- Custom fabricated diesel performance projects
Note: This is a universal performance turbine housing. Proper fitment depends on turbocharger configuration, turbine wheel size, exhaust manifold compatibility, downpipe configuration, and overall turbo system design.
What's Included
- BorgWarner 177103 S400 Turbine Housing
- 1.00 A/R Twin-Scroll T4 Exhaust Housing
Specifications
- Manufacturer: BorgWarner
- Part Number: 177103
- Component Type: Turbine Housing / Exhaust Housing
- Turbocharger Family: AirWerks S400
- Turbine Wheel Compatibility: 83mm / 74mm S400 Turbine Wheels
- Turbine Inlet: Twin-Scroll Divided T4
- A/R Ratio: 1.00
- Housing Style: Twin Scroll / Twin Volute
- Outlet Style: Standard S400 V-Band / Marmon Outlet
- Outlet Diameter: Approximately 4.21 to 4.62 Inch Depending on Configuration
- Construction: High-Temperature Cast Iron
- Application: Performance Diesel and Racing
- Primary Use: Single Turbo and Compound Turbo Systems
Cross Reference Numbers
177103, S400 T4 1.00 A/R Housing, SX S400 T4 A/R 1.00, S400 83mm Turbine Housing, S400 Twin Scroll Housing, S400 83/74 Housing, 840232706697, 177102, 177104, 177105
FAQ
What turbine wheel does the BorgWarner 177103 fit?
The 177103 is designed for BorgWarner S400-series turbochargers utilizing 83mm turbine wheel configurations. Always verify turbine wheel dimensions before ordering.
Is this a divided T4 housing?
Yes. The BorgWarner 177103 features a twin-scroll divided T4 inlet designed to improve exhaust pulse separation, turbo response, and overall efficiency.
What are the benefits of a 1.00 A/R housing?
A 1.00 A/R housing offers a strong balance between turbocharger spool-up and top-end horsepower, making it a popular choice for street, competition, and compound turbo applications.
Can this housing be used in compound turbo systems?
Yes. The 177103 is commonly used in custom compound turbocharger systems where efficient airflow and responsive spool characteristics are required.
What outlet style does this housing use?
The housing utilizes the standard S400-series V-band/Marmon style outlet commonly found on AirWerks S400 turbocharger configurations.
Is this housing a direct replacement for other S400 housings?
It can replace compatible S400 turbine housings when turbine wheel dimensions and mounting configurations match. Always verify your turbocharger specifications before installation.
