Product Description

BorgWarner 174430 S300GX Upgrade Turbocharger — S357/65/14, T3 Housing (1994–2002 5.9L Cummins)

BORGWARNER 174430 is the proven S300GX (S357/65 with 14cm² T3, wastegated) drop-in upgrade for 2nd-Gen Cummins. Aerodynamics and a rugged thrust system are engineered to support ~400 wheel horsepower with excellent durability in towing and street builds.

Key Specifications

• Compressor: ~57.1 mm inducer (S357)
• Turbine: 65 mm wheel, 14cm² T3 wastegated housing (≈0.80 A/R)
• Center Section: journal bearing, OEM-grade durability
• Target Power: up to ~400 whp with supporting mods (exhaust, intake, tuning, injectors)

These capabilities and recommendations align with BorgWarner’s published S300G/S300GX guidance.

Install Notes

• Downpipe: Requires an HX40-style downpipe (S300GX outlet).
• Fitment: Direct-fit T3 for 1994–2002 Dodge/Ram 5.9L Cummins (12V & 24V) with supporting hardware.

What’s Included

• BorgWarner 174430 S300GX turbocharger (S357/65/14, wastegated T3)

Recommended Add-Ons

• CPP -12AN Oil Drain Kit (S300/S400)
• Fleece FPE-34856 S300/S400 Turbo Stud Kit
• CPP 4.0" HX40-Style Downpipe

Who It’s For

Tow & Daily: Lower EGT and stronger mid-range than HX35W with proper fueling.

Street: Pairs well with mild injectors and tuning for a responsive ~350–400 whp setup.

Shop Turbo Sections by Vehicle

Dodge/Ram Cummins

• CUMMINS MAIN HUB (Home tab)
• 1994–1998 5.9L 12V — Turbocharger
• 1998.5–2002 5.9L 24V — Turbocharger

Ford Powerstroke

• Powerstroke — Turbochargers

GM Duramax

• Duramax — Turbochargers

FAQ

How much power can the S300GX 174430 support?

With proper fueling/exhaust/intake/tuning, BorgWarner guidance and industry practice place this unit near ~400 whp capability.{index=3}

Does it bolt to the factory manifold?

Yes—this is a T3 wastegated housing designed for 1994–2002 5.9L Cummins fitment. Verify your downpipe and oil lines.

Do I need an HX40 downpipe?

Yes—the S300GX uses an HX40-style outlet; use an HX40 downpipe or adapter.

Is this discontinued?

Some dealers note a shift toward newer SX-E variants; availability varies by seller. If stock is limited, ask us for an SX-E alternative with similar sizing. 

Why Buy BorgWarner Turbos from CPP Diesel

• Platform-specific guidance for 2nd-Gen Cummins
• Fast shipping and careful packaging
• From stock-style replacements to street/tow builds
• Phone & chat support from diesel pros