Product Description
Feed serious horsepower goals on your early common-rail Cummins. The Exergy E02 20156 NEW 300% OVER Injector Set with internal modification is engineered for high-fuel-demand builds on 2003–2004 5.9L 24V Cummins trucks. Each set is precision-built, balanced, and flow-matched by Exergy for consistent cylinder-to-cylinder delivery under extreme conditions.
Key Benefits
- NEW Exergy injectors — not reman — with 300% over fueling and internal mods for high-flow stability
- Individually calibrated and flow-matched for repeatability under load
- Supports large single or compound turbos and built transmissions
- Designed for race/off-road applications where maximum fueling is required
Fitment
- Vehicle: 2003–2004 Dodge Ram 2500/3500
- Engine: Cummins 5.9L 24V (Common Rail, early CR)
- Fuel System: Bosch CP3-based common rail
What’s Included
- (6) NEW Exergy 300% over common-rail injectors (flow-matched)
- Tech sheet / flow data (when provided by Exergy)
Recommended Supporting Parts
These high-flow injectors require proper supply, pressure control, and air to perform reliably:
- 03–07 Cummins Lift Pumps — maintain supply pressure for injector and CP3 longevity
- Exergy Rail Pressure Sensor (0–2700 bar) — accurate rail data at high demand
- Gaskets & Seals — refresh injector seals/lines during installation
- Shop All Exergy Performance
- Exergy Injectors (Brand Catalog)
Install Notes
- Professional installation strongly recommended; follow torque specs and cleanliness procedures
- Custom tuning and adequate turbo/airflow are required to control EGT and smoke with 300% over fuel
- Use a quality lift pump and proper filtration; contamination will damage new injectors
Frequently Asked Questions
Q: Can I run these on a stock turbo and tune?
A: No. 300% over injectors require upgraded turbo(s), built fuel system, and custom tuning for safe operation.
Q: Are these new or reman?
A: This is a NEW Exergy set (not reman), built and calibrated by Exergy.
Q: Do I need a lift pump?
A: Yes. A high-quality lift pump is essential to maintain supply pressure and injector life. See our 03–07 Cummins lift pumps.
Q: Will these pass emissions?
A: These injectors are intended for race/off-road use where applicable. Always follow local and federal regulations.
Q: Is core charge required?
A: This NEW set typically does not carry a core. If a core applies, details will be shown at checkout.
About Exergy Performance
Exergy is an industry leader in high-precision common-rail components for Cummins, Duramax, and Power Stroke platforms. Explore the full lineup here: Exergy at CPP Diesel.
