Product Description
Turn your 6.7L Cummins into a compound animal. The INDUSTRIAL INJECTION 22D404 Add-A-Turbo Kit is designed to compound your existing Phatshaft turbo with a proven BorgWarner S475 atmospheric unit for lower EGT, stronger mid-range, and big-power headroom. Built around clean routing and durable hardware for 2007.5–2012 Ram 2500/3500 6.7L trucks.
Fitment
- 2007.5–2012 Dodge/Ram 2500 & 3500, 6.7L Cummins (late 3rd-gen & early 4th-gen)
- Works with an existing Industrial Injection Phatshaft (or similar) primary turbo
What’s Included
- S400/S475 atmospheric turbo to compound with your current Phatshaft
- Hot- and cold-side tubing, boots, clamps, brackets, and install hardware
- Oil feed/return lines and related fittings
Key Benefits
- Compound performance: S475 over Phatshaft pairing supports big fuel and air while controlling EGT
- Tow & play: Broad, usable power with strong mid-range response
- Future-proof: Headroom for larger injectors and fueling upgrades
Recommended Parts (CPP internal links)
- ARP 247-4202 Head Stud Kit (5.9/6.7 Cummins) — lock the head down under higher boost
- High-flow Exhaust Manifold Options — improve drive pressure and reliability
- Fuel System Upgrades (CP3s, injectors, lift pumps) — feed the compounds
- More 07.5–12 Compound Turbo Parts — couplers, filters, accessories
- Need a Phatshaft? See: Phatshaft/Silver Bullet 64, Phatshaft/Silver Bullet 66
Helpful Notes
- This is an add-a-turbo compound kit; you must already have a Phatshaft (or similar) installed.
- Professional installation recommended. Verify clamp torque, oil line routing, and intercooler pipe clearances.
- Retune and monitor (boost/EGT/drive) after install for optimal results and safety.
FAQ
What turbo pairs with my Phatshaft in this kit?An S475 atmospheric turbo is used to compound with your existing Phatshaft, adding airflow while keeping EGT in check.
Does the kit include everything for install?It includes the S475 turbo, hot/cold piping, clamps/boots, brackets, and oil lines to compound with your current Phatshaft. We recommend adding a high-flow exhaust manifold and ARP head studs for best results.
Do I need custom tuning?Tuning is strongly recommended after compounding to optimize fueling, spool-up, and keep EGT under control.
Will this work with stock fueling?Yes, but the system really shines with upgraded lift pump, injectors, and/or higher-output CP3 to take advantage of the airflow.
