Product Description
Step up your 5.9L’s airflow. The INDUSTRIAL INJECTION VIPER PHATSHAFT 64 (PN 3642406512) is a drop-in turbo built for 2004.5–2007 Ram 2500/3500 5.9L Cummins common-rail trucks. It features a 64mm forged-milled (FMW) extended-tip compressor wheel, 65mm turbine wheel, and a 14cm² exhaust housing that’s ported for full wastegate travel—delivering strong towing performance with lower EGTs and quick, street-friendly response.
- 64mm FMW extended-tip compressor / 65mm turbine
- 14cm² exhaust housing with enlarged wastegate chamber
- 360° thrust bearing & dual-grooved journal bearings
- Wastegate set ~45 psi (PhatShaft 64 series)
- Drop-in fit for 2004.5–2007 5.9L Cummins CR
Fitment
2004.5–2007 Dodge Ram 2500/3500 with 5.9L Cummins (common rail). Direct-fit replacement turbo for these model years.
Recommended Parts (CPP Internal Links)
- 03–07 5.9L Cold Air Intakes – feed the 64mm compressor for best results.
- 04.5–07 5.9L Injectors – match fueling to your airflow goals.
- ARP 625+ Head Stud Kit – added cylinder pressure protection.
- 03–07 5.9L Exhaust Components – improve backpressure and EGTs.
- All 03–07 5.9L Cummins Upgrades – complete your build.
Specifications
| Manufacturer | Industrial Injection |
| Part Number | 3642406512 |
| Compressor Wheel | 64mm FMW extended-tip |
| Turbine Wheel | 65mm |
| Turbine Housing | 14cm², ported wastegate, enlarged chamber |
| Thrust/Bearings | 360° thrust, dual-grooved journal bearings |
| Wastegate | Preset ~45 psi (PhatShaft 64 series) |
| Fitment Years | 2004.5–2007 Ram 2500/3500 5.9L Cummins (CR) |
| UPC | Not published by manufacturer |
| GTIN | Not published by manufacturer |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
| Country of Origin | USA (manufacturer listings) |
FAQs
Will this turbo work on a stock-fuel 5.9L?Yes. It’s designed for daily driving and towing with mild fueling. For best results, pair with a quality intake and free-flowing exhaust. See our 03–07 intake options and exhaust components.
Do I need head studs?They’re strongly recommended when running higher boost or towing heavy. Consider ARP 625+ for added clamping force.
What injector size pairs well with a PhatShaft 64?Mild to moderate injector upgrades complement this turbo for 450–500+ HP builds. Start here: 04.5–07 injector options.
How does the 14cm² housing drive?Great EGT control with slightly slower spool than smaller housings—ideal for towing/working trucks.
Is tuning required?Not strictly, but proper calibration helps maximize drivability and EGT control when fueling is increased.
