Product Description
BorgWarner 176806 S400SX4 Turbocharger — S475/83, 1.10 A/R, T4 Housing
BORGWARNER 176806 delivers serious airflow with a 75mm S475 compressor and 83mm turbine, paired here with a twin-scroll T4 1.10 A/R housing — ideal for high-hp singles or as the atmospheric charger in compounds.
Note: BorgWarner’s factory literature associates PN 176806 with T6 inlets; our CPP configuration uses a T4 divided 1.10 A/R housing for easier light-duty fitment. Verify flange and outlet style before purchase.
Key Specifications
- Compressor (S475): ~74.6mm inducer (100mm OD), 5.0" hose inlet, 4.21" V-band outlet
- Turbine: 83mm wheel, 1.10 A/R twin-scroll T4 housing, 4.62" flat (half-Marmon) outlet
- Center Section: twin hydrodynamic journal bearings; adjustable housing orientation; recirculation grooves
- Power Range: ~500–1050+ HP depending on setup
Planned for high-fuel builds. Confirm manifold (T4 divided), downpipe, oil feed/return (-4AN feed, -10/-12AN drain recommended), and charge piping.
What’s Included
- BorgWarner 176806 S400SX4 turbocharger (S475/83, 1.10 A/R T4)
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 Upgrade: Faster packaging vs. T6, strong top-end. Best with upgraded fueling & supporting mods.
S300/S400 Compounds: Run 176806 as the atmospheric turbo with an S300 high-pressure unit for quick spool + big air.
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Dodge/Ram Cummins
- CUMMINS MAIN HUB (Home tab)
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FAQ
Is 176806 a direct bolt-on?
No. It’s a large-frame S400. Our listing uses a T4 divided housing; you’ll need a T4 manifold, correct downpipe, oil lines, and charge piping.
Street manners vs. S300?
S400s spool later. This unit shines on higher-fuel setups or as the low-pressure charger in compounds.
Outlet sizes?
5.0" compressor inlet, 4.21" V-band compressor outlet; 4.62" flat (half-Marmon) turbine outlet.
Oil restrictor?
Typically no restrictor on journal-bearing S400s; ensure healthy oil pressure and a free-draining return (-10AN to -12AN).
Why does some literature say T6?
BorgWarner’s spec sheet pairs PN 176806 with T6 housings; our CPP configuration utilizes a T4 1.10 A/R housing for easier fitment. Always match your manifold and downpipe to the turbo’s flange.
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
