Product Description

BorgWarner 171702 S400SX4 Turbocharger — S475/96, 1.32 A/R, T6 Housing

BORGWARNER 171702 is the go-to S400SX4 for serious power. It pairs a 75mm (S475) compressor with a 96mm turbine and a twin-scroll T6 1.32 A/R housing. Proven AirWerks durability with journal bearings and a ported-shroud cover for surge resistance.

Key Specifications

• Compressor (S475): 75mm inducer / 100.17mm exducer (Extended Tip), 5.0" hose inlet, V-band compressor outlet
• Turbine: 96mm inducer / 88.05mm exducer, 1.32 A/R twin-scroll T6 housing, Half-Marmon turbine outlet
• Center Section: twin hydrodynamic journal bearings; adjustable compressor & turbine housing orientation

Rated for roughly 500–1050 HP with proper supporting mods. Verify manifold flange (T6), downpipe, oil feed/return, and charge piping before purchase.

What’s Included

• BorgWarner 171702 S400SX4 turbocharger (S475/96, 1.32 A/R T6)

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 T6 Upgrade: Requires a T6 manifold and matching downpipe; later spool than T4 but delivers strong top-end flow for big-fuel builds.

Compounds (S300/S400): Use 171702 as the low-pressure (atmospheric) charger with an S300 high-pressure turbo for fast spool + big air volume.

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

• Powerstroke — Turbochargers
• Powerstroke Parts Hub (7.3L / 6.0L / 6.4L / 6.7L)

GM Duramax

• Duramax — Turbochargers
• Duramax Parts Hub (LB7 / LLY / LBZ / LMM / LML / L5P)

FAQ

Will the 171702 bolt onto my factory manifold?

No. The 171702 uses a T6 twin-scroll inlet. Most light-duty platforms use T3/T4. You’ll need a T6 manifold and appropriate downpipe/charge piping.

Is this a street-friendly single?

On stock or mild fueling, spool will be later than smaller-frame turbos. It excels on high-horsepower singles and as the atmospheric charger in compounds.

What are the inlet/outlet connections?

5.0" compressor inlet, V-band compressor outlet, and a Half-Marmon turbine outlet.

Do I need an oil restrictor?

Generally, journal-bearing S400s do not use a restrictor. Use a clean, properly sized feed and a free-draining -10AN to -12AN return; verify oil pressure.

Can CPP help spec a full kit?

Absolutely. We’ll match manifolds, gates, and an S300 high-pressure unit to meet your power, towing, or racing goals.

Why Buy BorgWarner Turbos from CPP Diesel

• Platform-specific fitment guidance for Cummins, Powerstroke & Duramax
• Fast shipping and careful packaging
• From stock replacements to custom compound systems
• Phone & chat support from diesel pros