Product Description
BorgWarner 177208 S300SX3 Exhaust Housing — .91 A/R, 74mm, T4 Divided
BORGWARNER 177208 is a genuine AirWerks S300SX3/SX-E .91 A/R twin-scroll T4 turbine housing for 80/74mm S300 wheels. It’s a proven choice to improve drive pressure balance and top-end flow in single or compound S300 builds.
Key Specifications
- A/R: 0.91 (twin-scroll/divided)
- Inlet flange: T4 divided
- Wheel compatibility: S300 80/74mm turbine
- Construction: cast-iron BorgWarner AirWerks housing
Turbine housing only. Confirm turbine wheel size and flange compatibility before purchase.
What’s Included
- BorgWarner 177208 S300SX3 .91 A/R T4 Divided Turbine/Exhaust Housing
Recommended Add-Ons
- Fleece FPE-34856 S300/S400 Turbo Stud Kit
- CPP -12AN Oil Drain Kit (S300/S400)
- CPP S300/SX-E 4.2" V-Band Compressor Outlet Clamp
Where It Shines
S300 Singles: Solid street/strip balance with quicker response than larger A/R housings while supporting strong top-end power.
S300 Compounds: Pairs well with popular S366/S369 SX-E supercores as the high-pressure unit’s turbine housing.
Shop Turbo Sections by Vehicle
Dodge/Ram Cummins
- CUMMINS MAIN HUB (Home tab)
- 1989–1993 5.9L (VE) — Turbocharger
- 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 this fit my S300?
It’s designed for S300SX/SX-E with an 80/74mm turbine. Verify your wheel size and existing inlet/outlet flanges before ordering. :contentReference[oaicite:0]{index=0}
Is the inlet T4 divided (twin-scroll)?
Yes, 177208 is a T4 twin-scroll .91 A/R housing. :contentReference[oaicite:1]{index=1}
Good for street use?
.91 A/R provides a strong balance of spool and top-end on S300 builds. For faster response with smaller injectors, consider a smaller A/R; for max peak power, larger A/R. (General guidance.)
What gaskets or hardware do I need?
T4 divided manifold gasket, appropriate studs/nuts, and downpipe V-band/Marmon parts as your setup requires. See the add-ons above.
Why Buy BorgWarner From CPP Diesel
- Platform-specific fitment help for Cummins, Powerstroke & Duramax
- Fast shipping, careful packaging
- Support for singles or compound systems
- Phone & chat support from diesel pros
