Product Description
Unlock clean, usable power on your early common-rail 5.9 with the EXERGY E01 20105 Reman 30% Over Injector Set. Precision-calibrated and flow-matched by Exergy Performance, these REMAN injectors deliver ~30% more fuel than stock while maintaining smooth idle quality and excellent street manners for 2003–2004 Cummins 5.9L 24V trucks.
Why Exergy?
- Remanufactured with new wear components, balanced and flow-verified
- Tight balance rates for crisp throttle response and drivability
- Built for towing, daily driving, or mild performance builds
Fitment
- Vehicle: 2003–2004 Dodge Ram 2500/3500
- Engine: 5.9L Cummins 24-Valve (early common-rail)
- Direct replacement set of 6; OE-style connectors and sealing
What’s Included
- Six (6) Exergy Reman 30% Over Injectors (E01 20105)
- Install notes for priming/bleeding and cleanliness best practices
Recommended Supporting Parts
Support your injector upgrade with quality supply and high-pressure components:
- 03–07 Cummins CP3 Pumps & Components
- Fuel System: Lift Pumps, Filtration, Rails/Sensors
- Shop All Exergy Performance
Pair With Matching Exergy Injectors (If You Need a Different Flow)
Need a different output? Stick with Exergy-only injector options for consistent quality:
- Exergy NEW 50HP (SAC 7-hole, 143°) 03–04 Cummins
- Exergy NEW 45% Over 03–04 Cummins
- Exergy NEW 100% Over 03–04 Cummins
Install Notes
- Use clean fuel, new sealing washers/tubes as needed, and prime/bleed thoroughly.
- Lift pump strongly recommended for consistent supply and injector longevity.
- Custom tuning can optimize results; not required for mild setups.
Frequently Asked Questions
Q: Are these a direct fit for 2003–2004 5.9L Cummins?
A: Yes—these are correct for early common-rail (2003–2004) 5.9L applications.
Q: Do I need a lift pump?
A: Highly recommended to stabilize supply pressure and improve filtration. See our 03–07 fuel system components.
Q: What if I want slightly less or more fuel than 30%?
A: Choose another Exergy injector set with the flow that matches your goals (see options above).
Q: Warranty?
A: Covered under Exergy’s manufacturer warranty; follow proper install/filtration procedures and keep proof of purchase.
About Exergy Performance
Exergy is a leader in precision diesel fuel systems. Explore the brand: Exergy at CPP Diesel.
