Product Description
Turn your single PhatShaft into a true compound setup. The INDUSTRIAL INJECTION 229401 Add-A-Turbo Kit pairs your existing PhatShaft/S300 secondary with a proven S475 atmosphere turbo to lower EGTs, move serious air, and support big injector fueling on your 2nd Gen Cummins.
Fitment
- 1994–1998 12-Valve (P7100) Dodge Ram 2500/3500 5.9L Cummins
- 1998.5–2002 24-Valve (VP44) Dodge Ram 2500/3500 5.9L Cummins
What’s Included
- BorgWarner S475 atmosphere turbo (typical spec)
- Hot & cold piping, boots, and clamps for compound layout
- Mounting brackets and hardware
- Oil lines & fittings for the atmosphere turbo
- Instructions for 2nd Gen installation
Why It Works
- Designed to run with your existing PhatShaft/S300 as the secondary for fast spool and strong mid-range.
- S475 atmosphere turbo adds top-end airflow for lower EGTs and higher horsepower potential.
- Excellent match for larger injectors and added fueling on street/tow or weekend warrior builds.
Recommended Parts (CPP internal links only)
- Industrial Injection PhatShaft 62 Turbo (94–02) — ideal secondary for compounds
- BorgWarner S475/83 1.10 A/R (T4) — common atmosphere turbo replacement
- HX40-Style 4" Downpipe & Clamp (94–02) — required with many S300/HX40-outlet setups
- CPP DIY Turbo Oil Drain Kit (-10AN) — clean, leak-free plumbing
- Silicone Couplers & T-Bolt Clamps — secure high-boost connections
- Intercoolers, Charge Pipes & Boots (98.5–02) — reduce charge-air temps
- High-Flow T3 Exhaust Manifold (98.5–02) — improved drive flow to the secondary
Helpful Notes
- This is an add-a-turbo kit: you must already have a PhatShaft/S300-style turbo installed as the secondary.
- Verify downpipe style (HX40/S300 outlet) and intercooler tube sizing to select proper couplers/clamps.
- For towing, match turbine housings and wastegate control to keep EGTs in check.
Cross-Reference / Alternatives
- Shop All 94–98 2nd-Gen Compound Kits & Parts
- Turbochargers — 98.5–02 24-Valve
- BorgWarner S300/S400 Turbos
FAQ
Do I need a PhatShaft already installed?Yes. This kit is engineered to add an S475 atmosphere turbo to a truck that already runs a PhatShaft/S300 secondary.
What power level can this support?With proper fueling, tuning, and supporting mods, S300/S475 compounds are a proven path to strong street/tow and weekend performance builds with significantly lower EGTs.
Will I need a different downpipe?Most S300/HX40-outlet secondaries require an HX40-style 4" downpipe. Verify your current turbo outlet and select the correct downpipe and clamp.
Does this fit both 12-valve and 24-valve 2nd Gens?Yes — the kit covers 1994–2002 5.9L Cummins (12V P-pump and 24V VP44) with an existing PhatShaft/S300 secondary.
