BorgWarner S300 1.00 A/R T4 Twin Scroll Turbine Housing – PN 179905

Genuine BorgWarner S300 T4 Divided Exhaust Housing

The BorgWarner 179905 turbine housing is a genuine BorgWarner replacement exhaust housing designed for S300SX, S300SX-E, and many S300-based performance turbocharger applications. Featuring a 1.00 A/R divided (twin scroll) T4 inlet and standard S300 turbine wheel fitment, this housing is an excellent choice for high-performance diesel and gasoline engines seeking improved exhaust flow, reduced drive pressure, and enhanced top-end horsepower.

The 1.00 A/R sizing strikes an ideal balance between spool-up and peak power capability, making it a popular option for competition trucks, street performance builds, drag racing applications, pulling trucks, marine engines, and custom turbocharger projects.

Fitment & Specifications

• Genuine BorgWarner Part Number: 179905
• Turbine Housing A/R: 1.00
• Turbine Wheel Compatibility: 80mm / 73mm S300 Turbine Wheel
• Inlet Flange: T4 Twin Scroll (Divided)
• Outlet Connection: 4.21" Marmon V-Band
• Material: High-Temperature Ni-Resist Cast Iron
• Turbocharger Family: BorgWarner S300SX, S300SX-E, and Compatible S300-Based Turbochargers
• Condition: Brand New Genuine BorgWarner Component

Compatible With

This turbine housing is designed for BorgWarner S300 turbochargers utilizing the popular 80mm Inducer/ 73mm enducer turbine wheel and a 4.21-inch Marmon V-band discharge connection. Commonly found on performance diesel and gasoline applications ranging from street-driven trucks to dedicated competition vehicles.

Important

This housing is intended for turbochargers equipped with an 80/73mm turbine wheel. Please verify turbine wheel dimensions and housing mounting flange dimensions before ordering to ensure compatibility with your specific turbocharger.