Product Description
BorgWarner 171698 S400SX4 Turbine Housing — 96mm, 1.32 A/R, T6 Exhaust Housing
BORGWARNER 171698 brings extreme flow with a **96mm turbine wheel paired with a 1.32 A/R twin-scroll **T6 housing**. If you're building for max exhaust flow yet want the heat containment & geometry of a twin-scroll, this housing is your ticket.
Key Specifications
- Turbine wheel size: 96mm
- Exhaust Housing: T6 (twin-scroll, traditional volute), 1.32 A/R
- Fits: S400SX4 exhaust flanges / housings; requires matching turbine wheel & bolts
Designed for high flow and large HP single-turbo setups. Expect slower spool than smaller A/R housings; ideal for builds with supporting mods & cooling.
What’s Included
- BorgWarner 171698 S400SX4 Turbine Housing (96mm, 1.32 A/R, twin-scroll, T6)
Recommended Add-Ons
- CPP T6 Exhaust Manifold for S400SX4
- Fleece 96mm Turbine Wheel Upgrade Kit
- CPP S400 96mm T6 Gasket Kit
Popular Build Paths
This housing is a go-to when your build wants high exhaust flow for sustained power, such as large displacement Cummins, Powerstroke, or Duramax engines. Pair with an S400SX4 wheel, proper waste-gate, exhaust setup, and strengthened downstream components.
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
Will the 171698 housing bolt to my existing S400 exhaust manifold?
Yes — the flanges are standard for S400SX4 T6 setups. But you’ll need the matching turbine wheel (96mm) and hardware. Also ensure your downpipe, waste-gate plumbing, and turbo location clearance can handle the T6 housing bulk.
How does 1.32 A/R affect turbo spool and power delivery?
A larger A/R like 1.32 slows spool relative to smaller A/R values, especially in low RPM, but gives significantly more exhaust flow and top-end power. Ideal for heavy-load, towing, racing, or high RPM usage.
Is twin-scroll necessary with this housing?
Yes — this is a twin-scroll (dual-volute) T6 housing. It gives better exhaust pulse separation and thermal efficiency compared to single scroll. Boosts back-pressure control and exhaust velocity at higher masses.
Does this require specific waste-gate sizing?
Yes. For strong builds, a large external waste-gate with a high flow capacity is recommended. The housing supports common external gate ports but matching hardware is essential to avoid lag or high exhaust gas temps (EGTs).
Will CPP stock this item or is it special order?
We’re working to keep 171698 in stock. Contact CPP Diesel if you want availability alerts or priority ordering.
Why Buy BorgWarner Turbine Housings from CPP Diesel
- Real world fitment advice for Cummins, Powerstroke & Duramax
- Fast shipping & trusted packaging
- OEM quality from the BorgWarner / AirWerks line
- Support with compound & custom builds
