Product Description
Push your early 5.9L common-rail to the edge. The S&S Diesel 305-400SAC-SET is a NEW set of 6 400% over injectors for the 2003–2004 Dodge Ram Cummins 5.9L 24V. Built with EDM/honed SAC nozzles and matched to tight tolerances, this set is engineered for serious fuel demands and big-power compounds.
Fitment
- 2003–2004 Dodge Ram 2500/3500, 5.9L Cummins 24-Valve (Early 5.9 CR)
Highlights
- EDM/honed SAC nozzles for clean, consistent orifices
- Nozzles flow-matched within ~1% per set; injectors flow-matched within ~3% per set
- Injection profiles aligned; build spec matched to nozzle flow
- Purpose-built for high-horsepower, high-airflow turbo systems
What’s Included
- (6) New S&S Diesel 400% over early 5.9 injectors (305-400SAC-SET)
- Installation-ready with injector O-rings/seals
Recommended Parts
- Upgraded CP3 pump(s) (dual fuel for big singles/compounds)
- Lift pump & filtration (AirDog/FASS)
- Injector connector/feed tubes
- Head studs & gasket system
- High-flow turbo kit / compounds
- Custom ECM calibration
- Shop all S&S Diesel products
Helpful Notes
- These are very large injectors. Sufficient air (turbo/compounds), fuel supply, and proper tuning are required.
- Core charge may apply depending on supplier policy; see cart for details.
- Professional installation and break-in procedures recommended.
FAQ
Will these fit my 2005 5.9L?No. This is for the early 5.9 common-rail (2003–early-2004). Late-2004.5–2007 use different injectors. Check your build date or contact us.
Do I need new connector (feed) tubes?We strongly recommend new tubes to ensure proper sealing and flow. See our connector tubes.
How big of a turbo setup do I need?At 400% over, plan on large singles or compound turbos with adequate lift-pump volume, an upgraded CP3, and custom tuning.
Are these nozzles SAC or VCO?They use SAC-style nozzles that are EDM/honed and matched for consistency.
Is tuning required?Yes. Proper ECM calibration is mandatory for drivability and engine safety.
