INDUSTRIAL INJECTION 227441 DODGE S300 SX-E 63/74 SINGLE TURBO KIT — 2003–2007 5.9L CUMMINS — .91 A/R

Wake up your 5.9L Cummins with a proven 2nd-gen style S300 SX-E upgrade. The INDUSTRIAL INJECTION 227441 kit centers a 63/74 SX-E on a high-flow T4 manifold for quick lighting, strong mid-range, and lower EGTs. Built around BorgWarner’s updated SX-E platform (360° thrust + FMW compressor), this .91 A/R package is a clean, serviceable single-turbo solution for street/competition builds.

Fitment

• 2003–2007 Dodge Ram 2500/3500 5.9L Cummins (Common Rail)

What’s Included

• BorgWarner S300 SX-E 63/74 turbocharger — .91 A/R divided
• High-flow T4 exhaust manifold (center-mount, 2nd-gen style)
• High-flow HX40 downpipe & required install hardware
• Oil feed/drain lines, clamps, and brackets (kit-specific)

Key Features

• 63mm FMW compressor / 74mm turbine for balanced street/strip performance
• 360° thrust bearing and SX-E aero for durability at elevated boost
• .91 A/R turbine housing for fast spool and strong tow-friendly response
• Cleaner layout with center-mount T4 manifold (2nd-gen style)
• Lower EGTs with the included high-flow HX40 downpipe

Recommended Parts (CPP internal links)

• ARP 247-4202 Head Stud Kit (5.9L CR)
• CP3 Injection Pumps — Stock & Performance (03–07)
• Fuel System Components (Injectors, Lift Pumps, Filtration)
• HX40-Style Downpipes & Clamps
• 2nd-Gen Swap & Intake Accessories (03–07)
• CPP 5.9L CR Long Block (03–07)

Helpful Notes

• This is a center-mount 2nd-gen style single turbo conversion; minor component relocation and intake/tube adjustments may be required.
• Plan fueling/airflow to match power goals (injectors, CP3, lift pump, intercooler/cac boots).
• For 100% off-road/competition use only where emissions compliance is not required.

FAQ

The .91 A/R is the sweet-spot for 63/74 on a 5.9L—quick to light with strong mid-range and manageable EGTs, ideal for responsive street/tow builds.

Recommended any time you increase boost. Studs improve clamping and gasket life under sustained load.

It will run on stock fuel, but upgraded injectors and a healthy/modified CP3 unlock its full potential. Always ensure adequate low-pressure supply.

Proper calibration is strongly recommended to optimize spool, drivability, and EGTs with this airflow increase.

Cross-Reference / Alternatives

• 227442 — 63/74 with 1.0 A/R (more top-end)
• 227435 — 62/74 with .91 A/R (quicker spool)
• 227447 — 64/74 with .91 A/R (more airflow)