Product Description
S&S Diesel 305-60SAC-SET is a NEW (not reman) 60% over injector set engineered for the Early 5.9L Cummins (2003–2004). Each set is precision flow-matched with SAC nozzles for clean, consistent fueling and the headroom needed for serious power goals.
Key Benefits
- SAC nozzles with S&S proprietary honing for excellent atomization
- Set flow-matched to tight tolerances for smooth, balanced performance
- Built to OE-level standards with application-matched injector specs
- Room to support larger turbo & tuning packages when properly set up
Fitment
- Engine: 5.9L Cummins 24-valve (Common Rail), Early 2003–2004
- Vehicles: 2003–2004 Dodge Ram 2500/3500 (verify build date)
- Not for: 2004.5–2007 “Late” 5.9 applications (use the appropriate Late 5.9 part numbering)
Browse our Cummins fuel system selection: 5.9L Injectors | Fuel System | S&S Diesel Brand
What’s Included
- (6) NEW S&S Diesel 60% Over Injectors – Part # 305-60SAC-SET
- Flow-match documentation per S&S build standards
- Manufacturer warranty documentation
Recommended Supporting Parts
- Upgraded CP3 Pump – ensures adequate rail supply for 60% over injectors
- Lift Pump / Supply Pump – stable low-side pressure & filtration
- High-Efficiency Fuel Filtration – protect your new injectors
- Injector Feed Tubes / Connecting Tubes – avoid sealing issues on install
- Custom Calibration – required to fully leverage 60% over flow safely
Notes
- Professional installation and tuning recommended.
- Core policies vary by seller; verify CPP Diesel core details on this product page.
- For Late-2004.5–2007 5.9L, use the correct Late 5.9 injector part (not interchangeable).
Power depends on the total combo (turbo, CP3, lift pump, tuning, altitude). With proper air & fuel support and calibration, 60% over injectors commonly support substantial gains suitable for street/strip builds while maintaining drivability when tuned correctly.
FAQ: Do I need new injector feed/connecting tubes?
It’s best practice to install new feed tubes to prevent sealing issues that can cause hard starts and balance rate problems. See our Injector Accessories.
FAQ: Are these true NEW injectors?
Yes—this listing is for NEW S&S injectors (not reman). If you need remanufactured, see our S&S reman option for Early 5.9 instead.
FAQ: Will these fit my 2004 truck?
If your 2004 is an Early 5.9 (built before the model-year change to “Late 5.9”), this set fits. If you have a Late-2004.5, use the Late 5.9 application.
FAQ: What tune changes are required?
60% over injectors require calibration changes to pulse width, rail pressure, and torque management. Work with a reputable tuner and confirm adequate air supply to control EGT and smoke.
