Product Description
BorgWarner 177248 S400SX3 Turbocharger — S471/83, 1.10 A/R, T4 Divided
BORGWARNER 177248 pairs a 71mm extended-tip S471 compressor with an 83mm turbine and a 1.10 A/R T4 twin-scroll housing. Built on the proven AirWerks S400SX3 architecture with durable journal bearings, it’s a go-to for high-power single setups and the low-pressure (atmospheric) role in S300/S400 compounds.
Key Specifications
- Compressor (S471): ~71.1 mm inducer, ~100 mm exducer, extended-tip design; 5.0" hose inlet; 4.21" V-band outlet
- Turbine: 83 mm wheel; 1.10 A/R T4 divided housing; ~4" “half-Marmon” style outlet
- Center section: twin hydrodynamic journal bearings; adjustable compressor & turbine housing orientation
Best for high-hp builds. Verify manifold flange (T4 divided), downpipe outlet, oil feed/return, and charge piping prior to purchase.
What’s Included
- BorgWarner 177248 S400SX3 turbocharger (S471/83, 1.10 A/R T4 divided)
Recommended Add-Ons
- CPP -12AN Oil Drain Kit (S300/S400)
- Fleece FPE-34856 S300/S400 Turbo Stud Kit
- CPP S400 4.0" Compressor Discharge Elbow
Popular Build Paths
Single T4 Divided: Requires a T4 twin-scroll manifold and matching downpipe. Quicker spool than comparable T6 housings; strong mid-to-top-end airflow.
S300/S400 Compounds: Run the 177248 as the atmospheric charger with an S300 high-pressure unit for fast response and big airflow headroom.
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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
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Ford Powerstroke
GM Duramax
FAQ
Will the 177248 bolt to my factory manifold?
No. It uses a T4 divided turbine inlet. Most OE light-duty diesels are T3 or single-scroll. You’ll need a matching T4 twin-scroll manifold and compatible downpipe.
Street-friendly as a single?
On stock fueling it will spool later than an S300, but shines on built fuel/air setups or as the atmospheric charger in compounds.
What are the outlet/inlet sizes?
Compressor side typically uses a 5.0" hose inlet and 4.21" V-band outlet; turbine outlet is the ~4" half-Marmon style used on S400s.
Oil feed/restrictor?
Journal-bearing S400SX3 units generally do not use a restrictor. Ensure clean supply and a free-draining -10AN to -12AN return. Verify oil pressure and follow best practices.
Can CPP help with compound parts?
Yes—contact us for the right S300 pair, manifold, wastegates, and piping for your power goals.
Why Buy BorgWarner Turbos from CPP Diesel
- Real fitment guidance for Cummins, Powerstroke & Duramax
- Fast shipping and careful packaging
- From stock replacements to fully custom compound systems
- Phone & chat support from diesel pros
