Product Description
Stack big air on your 2nd-gen Cummins. The INDUSTRIAL INJECTION 229409 PhatShaft S478 Add-A-Turbo kit compounds an existing PhatShaft secondary with a BorgWarner S478 atmosphere charger to slash EGT, widen the powerband, and support larger injectors on 1994–2002 5.9L Cummins trucks.
Fitment
- 1994–1998 12-Valve Dodge Ram 2500/3500 5.9L Cummins
- 1998.5–2002 24-Valve (VP44) Dodge Ram 2500/3500 5.9L Cummins
What’s Included
- S400-frame S478 atmosphere turbo (to pair with your existing PhatShaft)
- Application-specific compound piping, clamps, and couplers
- Oil lines and required install hardware/brackets
Key Benefits
- Compound performance: lower EGT, improved drive pressure, stronger mid-range and top-end
- Built to pair with PhatShaft: designed to compound with Industrial Injection PhatShaft secondaries
- Room to grow: supports larger injectors and aggressive fueling setups
Recommended Parts (CPP internal links only)
- Already have the high-pressure turbo? If not, start here: INDUSTRIAL INJECTION SUPER PHATSHAFT 62 (94–02)
- Strong, serviceable oil return: CPP 3934084 FLEXIBLE TURBO OIL DRAIN (89–18 Cummins)
- Piping support / components: CRAZY CARL’S TWIN TURBO PIPING KIT (94–07)
- Browse compound/twin solutions: COMPOUND KITS & PARTS — 94–98 | COMPOUND KITS & PARTS — 98.5–02
- Shop the full Industrial Injection lineup: INDUSTRIAL INJECTION BRAND PAGE
Helpful Notes
- This is an Add-A-Turbo kit intended to compound with an existing Industrial Injection PhatShaft high-pressure turbo.
- Targeted for trucks with upgraded fueling (e.g., larger injectors). Verify clutch/transmission capacity and boost control strategy.
- Professional installation recommended. Always check charge-pipe/intercooler boot condition and oil supply/return routing.
FAQ
Do I need a PhatShaft turbo already installed?Yes. This Add-A-Turbo kit is designed to work with an existing Industrial Injection PhatShaft secondary. If you still need one, see our recommended PhatShaft options above.
Will this fit both 12-valve and 24-valve 2nd gens?Yes — the kit is built for 1994–2002 5.9L Cummins (12V and 24V). Minor routing differences may apply during install.
What power level can an S478 compound support?With proper fueling, tuning, and drivetrain, an S478 atmosphere turbo provides substantial headroom while keeping EGT in check. Final results depend on injectors, pump, cam, headwork, and vehicle use.
What other parts should I plan for?Fresh intercooler boots, quality oil feed/return components, and a healthy high-pressure PhatShaft. Consider a piping support kit for custom layouts.
