Your Cart (0)
Thumbnail Filmstrip of BorgWarner 178789 1.10 Turbine Housing Images
BorgWarner 178789 S400SX 1.10 A/R T4 Divided Twin-Scroll Turbine Housing (87mm)
Genuine BorgWarner AirWerks turbine housing engineered for S400SX, S400SX3, and S400SX-E series turbochargers with 87mm turbine wheels. This precision-cast 1.10 A/R T4 divided (twin-scroll/VTF) housing delivers an excellent balance of responsive spool-up and strong top-end exhaust flow for high-performance diesel applications.
Key Specifications & Features
- A/R Ratio: 1.10 — Optimized for balanced performance; strong mid-range torque with excellent top-end flow (typically supports 500–1050+ HP builds depending on supporting mods, fuel system, and tuning).
- Inlet Flange: T4 divided / twin-scroll (VTF) — Improves exhaust pulse separation, reduces drive pressure/backpressure, and enhances cylinder scavenging for quicker turbo response.
- Outlet: V-band discharge (V-band clamp sold separately).
- Wastegate: External wastegate provision (wastegate and actuator not included).
- Turbine Wheel Fitment: 87mm (≈87.37mm) OD turbine wheel.
- Material: Durable cast iron construction for superior heat resistance under high EGTs and boost.
- Finish: Natural/as-cast.
Performance Benefits
The 1.10 A/R sizing strikes an ideal compromise for street/strip, drag racing, sled pulling, and high-horsepower diesel trucks. It offers better top-end breathing than smaller .90 or 1.00 A/R housings while maintaining strong response compared to larger 1.25 A/R options. The divided twin-scroll design maximizes exhaust energy utilization, helping lower drive pressure and improve overall turbo efficiency in both single-turbo and compound setups.
Compatibility
- Turbo Families: BorgWarner S400SX, S400SX3, and S400SX-E (common cross-references include models such as 14879880082, 179174, 179176, 179180, 179182, 14009097006, and 14009097014).
- Typical Applications: High-performance single-turbo or compound turbo diesel builds on 6.7L Cummins, 6.0L/6.4L/6.7L Powerstroke, and Duramax engines. Popular for 2nd-gen and 3rd-gen Cummins swaps and high-power truck builds.
Note: This is the turbine housing only. It does not include the turbine wheel, CHRA/cartridge, compressor housing, gaskets, mounting hardware, or V-band clamp.
BorgWarner 178789 S400SX 1.10 A/R T4 Divided Twin-Scroll Turbine Housing (87mm)
Genuine BorgWarner AirWerks turbine housing engineered for S400SX, S400SX3, and S400SX-E series turbochargers with 87mm turbine wheels. This precision-cast 1.10 A/R T4 divided (twin-scroll/VTF) housing delivers an excellent balance of responsive spool-up and strong top-end exhaust flow for high-performance diesel applications.
Key Specifications & Features
A/R Ratio: 1.10 — Optimized for balanced performance; strong mid-range torque with excellent top-end flow (typically supports 500–1050+ HP builds depending on supporting mods, fuel system, and tuning).
Inlet Flange: T4 divided / twin-scroll (VTF) — Improves exhaust pulse separation, reduces drive pressure/backpressure, and enhances cylinder scavenging for quicker turbo response.
Outlet: V-band discharge (V-band clamp sold separately).
Wastegate: External wastegate provision (wastegate and actuator not included).
Turbine Wheel Fitment: 87mm (≈87.37mm) OD turbine wheel.
Material: Durable cast iron construction for superior heat resistance under high EGTs and boost.
[...]
BorgWarner 178789 S400SX 1.10 A/R T4 Divided Twin-Scroll Turbine Housing (87mm)
Genuine BorgWarner AirWerks turbine housing engineered for S400SX, S400SX3, and S400SX-E series turbochargers with 87mm turbine wheels. This precision-cast 1.10 A/R T4 divided (twin-scroll/VTF) housing delivers an excellent balance of responsive spool-up and strong top-end exhaust flow for high-performance diesel applications.
Key Specifications & Features
- A/R Ratio: 1.10 — Optimized for balanced performance; strong mid-range torque with excellent top-end flow (typically supports 500–1050+ HP builds depending on supporting mods, fuel system, and tuning).
- Inlet Flange: T4 divided / twin-scroll (VTF) — Improves exhaust pulse separation, reduces drive pressure/backpressure, and enhances cylinder scavenging for quicker turbo response.
- Outlet: V-band discharge (V-band clamp sold separately).
- Wastegate: External wastegate provision (wastegate and actuator not included).
- Turbine Wheel Fitment: 87mm (≈87.37mm) OD turbine wheel.
- Material: Durable cast iron construction for superior heat resistance under high EGTs and boost.
- Finish: Natural/as-cast.
Performance Benefits
The 1.10 A/R sizing strikes an ideal compromise for street/strip, drag racing, sled pulling, and high-horsepower diesel trucks. It offers better top-end breathing than smaller .90 or 1.00 A/R housings while maintaining strong response compared to larger 1.25 A/R options. The divided twin-scroll design maximizes exhaust energy utilization, helping lower drive pressure and improve overall turbo efficiency in both single-turbo and compound setups.
Compatibility
- Turbo Families: BorgWarner S400SX, S400SX3, and S400SX-E (common cross-references include models such as 14879880082, 179174, 179176, 179180, 179182, 14009097006, and 14009097014).
- Typical Applications: High-performance single-turbo or compound turbo diesel builds on 6.7L Cummins, 6.0L/6.4L/6.7L Powerstroke, and Duramax engines. Popular for 2nd-gen and 3rd-gen Cummins swaps and high-power truck builds.
Note: This is the turbine housing only. It does not include the turbine wheel, CHRA/cartridge, compressor housing, gaskets, mounting hardware, or V-band clamp.