Product Description
BorgWarner 177105 S400 Exhaust Housing 83mm T4 1.25 A/R Half-Marmon 4.62 Inch
The BorgWarner 177105 S400 Exhaust Housing 83mm T4 1.25 A/R Half-Marmon 4.62 Inch is a genuine replacement turbine housing designed for BorgWarner AirWerks S400 turbochargers utilizing an 83mm turbine wheel. Featuring a divided T4 inlet flange, 1.25 A/R ratio, and Half-Marmon 4.62-inch turbine outlet, this housing is engineered to support high-flow diesel performance applications while maintaining excellent drive pressure control and top-end horsepower capability.
Popular among Cummins, Duramax, and Power Stroke enthusiasts, the BorgWarner 177105 turbine housing is commonly used in drag racing, sled pulling, competition diesel builds, and custom compound turbocharger systems. Its twin-scroll T4 design helps maximize exhaust pulse energy while improving turbine efficiency in high-performance applications.
Features
- Genuine BorgWarner AirWerks S400 turbine housing
- Designed for 83mm S400 turbine wheels
- 1.25 A/R turbine housing ratio
- Divided twin-scroll T4 inlet flange
- Half-Marmon 4.62-inch turbine discharge
- Durable high-temperature cast construction
- Excellent drive pressure control for high-horsepower applications
- Supports improved exhaust flow and turbine efficiency
- Ideal for competition and performance diesel applications
- Direct replacement for compatible S400 turbocharger configurations
Fitment
- BorgWarner AirWerks S400 turbochargers with 83mm turbine wheels
- S464/83 turbocharger applications
- S467/83 turbocharger applications
- S471/83 turbocharger applications
- S475/83 turbocharger applications
- Custom Cummins performance builds
- Custom Duramax performance builds
- Custom Power Stroke performance builds
- Competition diesel applications
- Compound turbocharger systems
Note: Verify turbine wheel size, turbine housing dimensions, outlet style, and flange configuration before ordering. This housing is intended for S400-frame turbochargers utilizing an 83mm turbine wheel.
What's Included
- BorgWarner 177105 S400 Exhaust Housing
- 1.25 A/R Divided T4 Turbine Housing
- Half-Marmon 4.62 Inch Turbine Outlet Configuration
Specifications
- Manufacturer: BorgWarner
- Part Number: 177105
- Component Type: Exhaust Turbine Housing
- Turbocharger Frame: AirWerks S400
- Turbine Wheel Compatibility: 83mm
- Turbine Housing A/R: 1.25
- Inlet Flange: Divided T4 Twin-Scroll
- Outlet Style: Half-Marmon
- Outlet Diameter: 4.62 Inch
- Material: High-Temperature Cast Iron
- Application: Performance Diesel Turbocharger Systems
- Primary Use: High-Horsepower Single and Compound Turbo Applications
Cross Reference Numbers
177105, S400 1.25 A/R Housing, BorgWarner S400 T4 Housing, S400 83mm Turbine Housing, S400 Half-Marmon Housing, AirWerks S400 Turbine Housing
FAQ
What turbine wheel is the BorgWarner 177105 designed for?
The BorgWarner 177105 is designed for S400-frame turbochargers utilizing an 83mm turbine wheel.
What does the 1.25 A/R housing provide?
A 1.25 A/R housing typically offers improved top-end airflow, lower drive pressure, and increased horsepower potential compared to smaller A/R turbine housings.
Is this a divided T4 housing?
Yes. The 177105 features a divided twin-scroll T4 inlet flange designed to improve turbine efficiency and exhaust pulse utilization.
What is a Half-Marmon outlet?
The Half-Marmon outlet design is commonly used on performance diesel turbocharger applications and provides a secure connection point for custom exhaust fabrication.
Will this fit my S400 turbocharger?
Fitment depends on turbine wheel size, housing configuration, and turbocharger model. Always verify compatibility with your specific S400 turbocharger before ordering.
Is this housing commonly used in compound turbo systems?
Yes. The BorgWarner 177105 is frequently used in high-horsepower single turbo and compound turbocharger systems where increased airflow and reduced drive pressure are desired.
