Product Description
S&S Diesel 305-450SAC-SET is a NEW set of 6 450% over, SAC-nozzle injectors engineered for the EARLY 5.9L common-rail platform. Each set is flow-matched and built for maximum fuel delivery when your Cummins is set up for serious competition use.
Fitment
- 2003–Early 2004 Dodge Ram 2500/3500, 5.9L Cummins 24V (common-rail)
- Engine family: ISB 5.9L CR (early “2003–early 2004” trucks)
What’s Included
- (6) New S&S Diesel 450% Over Early 5.9 Injectors (SAC nozzle)
- Flow-matched set, built to tight variance
Recommended Supporting Parts
These injectors move a tremendous amount of fuel. For best results and to protect your engine, pair with the right air and fuel system upgrades:
- High-Output or Dual CP3 Pumps – required to maintain rail pressure under load
- Lift Pump System – consistent low-pressure supply (AirDog/FASS compatible)
- Upgraded Fuel Filtration – protect precision components
- Appropriate Turbocharger(s) – match airflow for smoke and EGT control
- Head Studs & Gasket Upgrades – recommended for high cylinder pressure builds
- Exhaust & Manifold Upgrades – reduce drive pressure
- Professional Tuning – calibrate for large injector flow
- Injector Install Kit – seals and hardware for a clean install
Why CPP Diesel
- Performance-first curation of S&S components for Cummins builds
- In-house diesel experts and racer-proven recommendations
- Secure checkout and fast shipping from our U.S. warehouses
Important Notes
- Competition/Race Use Only. Not intended for street-driven, emissions-controlled vehicles.
- Requires significant supporting mods: adequate CP3 supply, lift pump, turbo(s), and proper tuning.
- Core policy: new set (no core return required). Always follow OE torque and cleanliness procedures.
FAQ
Does 305-450SAC-SET fit 2004.5–2007 trucks?No — this is an early 5.9 injector set for 2003–early 2004 common-rail trucks. Mid-2004.5+ trucks use different injector part families. Check our Fuel Injectors category for late-2004.5–2007 options.
How big of a turbo do I need for 450% over injectors?
These are very large race injectors. Most builds run a substantial single or compounds with adequate air to keep EGT and smoke in check. Contact CPP Diesel for a combo that matches your goals, and review our Turbochargers section.
Will stock CP3 and lift pump support these?
No. Plan on an HO or dual CP3 setup plus a quality lift pump system to maintain commanded rail pressure. See CP3 Pumps and Lift Pumps.
What nozzle style are these?
SAC-nozzle, EDM/honed, flow-matched. Built to tight variance for consistent cylinder-to-cylinder delivery.
Are these suitable for daily driving?
They’re intended for competition only. For streetable setups, consider smaller injector sizes in our Fuel Injectors category.
