Product Description
BorgWarner 177104 S400 Exhaust Housing — 83mm, T4, 1.10 A/R
The BORGWARNER 177104 exhaust housing is a genuine AirWerks S400 component featuring an 83mm turbine and a 1.10 A/R T4 twin-scroll inlet. This housing is designed for builders converting S400 turbos to a T4 footprint for easier manifold and piping compatibility.
Key Specifications
- Part Number: 177104
- Turbo Family: S400 / AirWerks
- Turbine Size: 83mm wheel fitment
- A/R Ratio: 1.10
- Inlet Flange: T4 twin-scroll
- Outlet: 5.75" Marmon
This is the OEM BorgWarner housing only — turbocharger sold separately.
What’s Included
- 1x BorgWarner 177104 S400 Exhaust Housing (83mm T4, 1.10 A/R)
Popular Applications
This housing allows S400 chargers to bolt to T4-style exhaust manifolds commonly found in Cummins, Powerstroke, and Duramax builds. It is often used to:
- Replace worn or cracked housings on existing S400 turbos
- Convert a T6 S400 into a T4 for easier fitment
- Tune spool vs flow balance with 1.10 A/R sizing
Shop Turbo Sections by Vehicle
Dodge/Ram Cummins
- CUMMINS MAIN HUB (Home tab)
- 1998.5–2002 5.9L (VP44) — Turbocharger
- 2003–2007 5.9L CR — Turbo/Supercharger
- 2007.5–2012 6.7L — Turbocharger
- 2013–2018 6.7L — Turbocharger
- 2019–2024 6.7L — Turbos & Accessories
Ford Powerstroke
GM Duramax
FAQ
What turbo does the 177104 housing fit?
This housing is designed for BorgWarner S400 turbos with an 83mm turbine wheel. Always measure and confirm wheel size before ordering.
What’s the advantage of a T4 housing?
A T4 footprint is more common in aftermarket manifolds and can improve spool characteristics compared to T6 housings, with slightly less top-end flow.
Does this housing include hardware or clamps?
No. It is the housing only. Order studs, gaskets, or clamps separately.
Can this replace a cracked housing?
Yes. The 177104 is a direct BorgWarner replacement part for compatible S400 chargers.
Is this housing good for compound setups?
Yes. Many compound kits use a T4 S400 for easier fitment and balance of spool vs airflow.
Why Buy BorgWarner from CPP Diesel
- Direct OEM AirWerks components
- Expert fitment support for Cummins, Powerstroke & Duramax
- Fast shipping with careful packaging
- Real-world diesel performance guidance
