Product Description
Unlock reliable 100 HP gains with the Exergy E02 20121 New Injector Set for early 2003–2004 Cummins 5.9L (24V) common-rail engines. These SAC 7-hole, 143° injectors are engineered and flow-matched by Exergy for crisp throttle response, clean fueling, and tow-friendly drivability.
Key Benefits
- Brand-new Exergy assemblies (not reman) for maximum longevity
- SAC 7-hole, 143° pattern optimized for early 5.9L CR combustion
- Precision flow-matched sets for smooth idle and even cylinder fueling
- Supports ~100 HP over stock with proper air and supply pressure
Fitment
- Platform: Dodge Ram 2500/3500
- Engine: 5.9L Cummins 24-valve (common rail)
- Years: 2003–2004 (early LB7-era Cummins CR)
What’s Included
- Set of six (6) brand-new Exergy E02 20121 100HP injectors
- Flow data (per Exergy practices) and install guidance
Recommended Supporting Parts
For best results and injector life, pair with a healthy CP3 and stable low-pressure supply:
- 03–07 Cummins CP3 Injection Pumps
- Shop Exergy Cummins Injectors (All Options)
- All Exergy Performance at CPP Diesel
Install Notes
- Professional installation recommended; use clean procedures to prevent contamination.
- Verify rail pressure control and return rates; replace compromised lines/seals as needed.
- Custom tuning recommended to fully realize power and maintain smoke control.
Frequently Asked Questions
Q: Are these brand-new or remanufactured?
A: Brand-new Exergy units (not reman).
Q: Do I need a lift pump?
A: Strongly recommended to stabilize supply pressure and filtration, especially with higher-flow injectors.
Q: Will these work with my stock turbo?
A: Yes, but tuning and supporting airflow help manage EGT and smoke, especially under load.
Q: Do I need to program the injectors?
A: Follow OE procedures for injector codes and confirm rail/return specs after install.
Q: Warranty?
A: Covered by Exergy’s manufacturer warranty; retain proof of purchase and follow proper install/filtration practices.
About Exergy Performance
Exergy builds precision, flow-matched common-rail components trusted for street, tow, and competition. Explore more here: Exergy Performance at CPP Diesel.
