Product Description
Max out your 5.9L Cummins with Exergy’s E02 20260 NEW 400% Over Injector Set. These precision-calibrated Exergy injectors with internal modification deliver extreme fueling for high-horsepower builds while maintaining the quality and repeatability Exergy is known for.
Key Benefits
- Brand-new Exergy injectors with internal modification for 400% over flow
- Individually tested and flow-balanced for consistent cylinder-to-cylinder delivery
- Built for serious power goals: sled pull, drag race, and dedicated competition trucks
- Backed by Exergy’s industry-leading calibration and quality control
Fitment
- Make/Model: Ram 2500/3500
- Engine: 5.9L Cummins 24V Common Rail (CR)
- Years: 2004.5, 2005, 2006, 2007 (late 2004 CR)
- ECM/Tuning: Custom tuning is required for proper operation with 400% over injectors
What’s Included
- Set of 6 — Exergy E02 20260 NEW 400% Over Injectors (with internal modification)
- Calibration data and Exergy quality documentation
Recommended Supporting Parts
To support 400% over fueling, pair these injectors with a capable supply system, filtration, and hard parts. Injector links below are Exergy-only per your branding strategy.
- 03–07 Cummins Lift Pumps (AirDog / FASS / BD)
- Shop All Exergy Performance
- Exergy Injectors (All Platforms)
- 03–07 Cummins Fuel System Components (rails, lines, distribution blocks, filters)
Install Notes
- Competition part: 400% over injectors require proper tuning, a high-flow lift pump, and a high-capacity CP3/dual-fueler setup.
- Use new connector tubes/seals as needed and follow torque & cleanliness best practices.
- Contamination kills injectors—use high-quality filtration and prime/bleed the system thoroughly.
Frequently Asked Questions
Q: Are these injectors street friendly?
A: These are competition-level 400% over injectors. They can be street-driven with the right setup, but they’re intended for high-horsepower builds and require custom tuning.
Q: What size CP3 do I need?
A: At minimum, a high-output 12mm+ CP3 or dual-fueler setup is recommended to maintain commanded rail pressure at WOT with 400% over injectors.
Q: Do I need a lift pump?
A: Yes—absolutely. See our 03–07 Cummins Lift Pump category.
Q: Can I mix these with non-Exergy injectors?
A: No—always run a matched set. For other flow levels from the same brand, shop Exergy Injectors.
Q: Warranty?
A: Covered by Exergy’s manufacturer policy. Keep proof of purchase and adhere to installation/filtration requirements.
About Exergy Performance
Exergy is a leader in precision common-rail fuel system components. Browse the full lineup here: Exergy Performance at CPP Diesel.
