1994-2002 Cummins Compound Phatshaft Add-A-Turbo Kit (229401)

Industrial Injection's 2nd Gen Cummins compound PhatShaft add-a-turbo kit for 1994-2002 Dodge Ram 2500/3500 5.9L Cummins (12V and 24V). An add-a-turbo kit that compounds a BorgWarner S475 atop your existing PhatShaft setup — the right setup for trucks running larger injectors that need more airflow to control EGTs and unlock the next horsepower step.

The compound layout drops EGTs under heavy towing while supporting up to 700 HP for race builds. Kit ships as a complete bolt-on (your existing PhatShaft (3622306501) or similar single is required as the high-pressure stage). Multiple S475 variants are available depending on which PhatShaft you're running.

• Up to 700 HP — Compound Configuration
• Lower EGTs Under Towing & Race Load
• Complete Kit — Ready to Install
• Includes BorgWarner S475 Turbocharger
• Multiple Turbo Variants Available — Match to Your Existing PhatShaft
• For 1994-2002 Dodge Ram 5.9L Cummins (12V and 24V)
• Part Number: 229401

• Requires an existing PhatShaft or similar single turbo — this is an add-a-turbo kit, not a complete compound setup.
• Does not include the recommended high-flow exhaust manifold.
• Competition-use only. Not legal for on-road, off-road, or dual-use applications — closed-circuit competition only.