INDUSTRIAL INJECTION 227425 DODGE S471 TURBO SWAP KIT FOR 03–07 5.9L CUMMINS (1.10 A/R)

Product Description

Overview

Unlock serious airflow and lower drive pressure with the Industrial Injection 227425 S471 Turbo Swap Kit for 2003–2007 Dodge Ram 2500/3500 5.9L Cummins. This proven 2nd-gen style swap delivers fast, clean power with an S471 turbo and a 1.10 A/R turbine housing for strong top-end without choking your manifold drive pressure. Built for street/strip trucks that tow occasionally and want reliable, repeatable performance.

Key Features

• S471 turbocharger with 1.10 A/R turbine housing (T4)
• Lower EGTs and drive pressure vs. stock HE351
• High-flow 2nd-gen style mounting for improved serviceability
• Quality hardware, lines, and brackets for a clean install
• Designed to support big fuel upgrades while remaining streetable

Fitment

• Vehicle: Dodge Ram 2500/3500
• Engine: 5.9L Cummins (Common Rail)
• Model Years: 2003, 2004, 2004.5, 2005, 2006, 2007
• Turbo Mount: 2nd-Gen Style, T4
• Part Number: Industrial Injection 227425

What’s Included

• S471 turbocharger (1.10 A/R)
• 2nd-gen style exhaust manifold & mounting hardware
• Oil feed & return lines, coolant plugs (as required)
• Downpipe connection & clamps
• Charge pipe/couplers & T-bolt clamps
• All necessary brackets, gaskets, and hardware

Note: Exact contents may vary by batch. Always verify the current kit contents before installation.

Recommended Supporting Parts (Links to our site)

• 5.9L Cummins Performance Category
• Turbo Kits & Accessories
• ARP Head Stud Kit 5.9L Cummins
• 4" Downpipe (S400 Swap)
• Intercooler Boot & Clamp Kit
• High-Flow Intake Horn
• Lift Pump (Fuel Supply Upgrade)
• Custom EFI Live/HP Tuners Calibration

Installation Notes

• Professional installation and tuning are strongly recommended.
• Verify boost leak-free charge system after install.
• Monitor EGT, boost, and drive pressure for optimal results.

FAQs

Q: What power level can an S471 with a 1.10 A/R support?
A: With proper fuel and tuning, many builds see ~700–800+ HP. Actual results depend on elevation, fuel system, and calibration.

Q: Is this kit good for towing?
A: Yes for light to moderate towing with correct tuning and gearing. For heavy, frequent towing, consider a smaller S400 or a compound setup.

Q: Does this require a 2nd-gen style manifold?
A: Yes—this kit includes a T4 2nd-gen style manifold designed for the S400 frame turbo.

Q: Do I need head studs?
A: Strongly recommended above ~45 PSI boost. See our ARP head stud kit.

Specifications