Product Description
Stabilize rail pressure and feed your CP3 what it needs. The INDUSTRIAL INJECTION 237403 Dual Feed Line is a rigid, steel-encased high-pressure line that routes from the CP3 injection pump to the common rail on 5.9L Cummins common-rail trucks. It increases fuel volume delivery and helps the system recover rail pressure faster during heavy throttle and tuning.
Fitment
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins Common Rail
What’s Included
- Industrial Injection Dual Feed High-Pressure Line (steel-encased, rigid)
- Installation hardware as supplied by manufacturer
Why It Works
- Higher volume path from CP3 to the rail to help sustain commanded pressure under load
- Faster rail recovery during rapid fueling changes and wide-open throttle events
- Rigid construction for durability in high-pressure, high-heat environments
Recommended Parts (CPP internal links)
- 03–07 CP3 Injection Pumps — Stock & Performance
- Dual CP3 Kits & Hardware (03–07)
- 5.9L Cummins Common-Rail Injectors
- 03–07 Fuel System Components (rails, sensors, lines, distribution)
- Shop All 2003–2007 5.9L Cummins Parts
Cross-Reference / Alternatives
- Upgraded CP3 Pumps (supporting fuel supply)
- Dual CP3 Add-On Systems
- Big Line Kits, Rails & Relief/Plug Components
Helpful Notes
- Intended for 2003–2007 5.9L common-rail platforms using a Bosch CP3 pump.
- Verify cleanliness and torque specs when opening any high-pressure fuel circuit.
- Pair with a healthy CP3 (or dual CP3) and adequate lift-pump supply for best results.
FAQ
Will this fit my 2003–2007 5.9L Cummins?Yes—this line is designed for 2003–2007 Dodge Ram 2500/3500 5.9L Cummins common-rail trucks that use a CP3 pump.
What improvement should I expect?
The dual feed path increases volume to the rail and can help the system maintain/restore commanded rail pressure under aggressive fueling, tuning, or larger injectors.
Do I need any tuning to run this?
No tuning is strictly required, but the biggest benefit is realized on trucks with higher fuel demand (injectors, pump upgrades, or competition use).
What should I install with it?
We recommend confirming CP3 health, ensuring solid lift-pump supply, and considering a rail plug/relief solution when appropriate. See our recommended parts above.
