Product Description
Pushing into competition territory? The Exergy E02 20154 NEW 250% Over Injector Set is engineered for serious power on the 2003–2004 Cummins 5.9L 24V (early common-rail). Each set is built, balanced, and flow-matched by Exergy Performance for precise delivery at extreme flow rates.
Key Benefits
- ~250% over stock flow for high-horsepower builds
- Tight cylinder-to-cylinder balance for cleaner, more controlled fueling
- Built, calibrated, and flow-verified by Exergy Performance
- Matched set of six for consistent performance under load
Fitment
- Make/Model: Dodge Ram 2500/3500
- Engine: 5.9L Cummins 24V (Common Rail, early)
- Years: 2003–2004 (pre-2004.5 changeover)
What’s Included
- Six (6) NEW Exergy 250% over injectors (E02 20154), flow-matched as a set
- Quality control / flow data from Exergy
Recommended Supporting Parts
At this flow level, we strongly recommend an upgraded CP3 and solid supply-side fuel support:
- Exergy CP3 Options for 03–07 Cummins:
- 03–07 Cummins Lift Pumps (supply pressure/filtration is critical)
Install Notes
- Professional installation and proper rail pressure control/tuning are required at this size.
- Verify injector connector tubes and sealing surfaces; replace worn components as needed.
- Run high-quality filtration and clean fuel; contamination is the #1 cause of injector failure.
Frequently Asked Questions
Q: Are these streetable?
A: 250% over sets are primarily for race/competition builds. Street use typically needs extensive supporting mods and careful tuning.
Q: Do I need an upgraded CP3?
A: Yes—at this flow you’ll overwhelm a stock pump. Pair with a high-output Exergy CP3 and a quality lift pump (see recommendations above).
Q: Tuning required?
A: Absolutely. Work with a tuner familiar with large Exergy injector calibrations for drivability and EGT control.
Q: Early vs. late 5.9L—will these fit my truck?
A: These are for early common-rail 5.9L (2003–2004). Late models (2004.5–2007) use different injector part numbers.
