Product Description
S&S Diesel 325-45SAC-SET 45% Over Late 5.9 Injector – NEW (Set of 6)
Built for the late 5.9L Cummins (2004.5–2007), this brand-new S&S Diesel Motorsport injector set uses SAC nozzles and precise flow matching to deliver ~45% over stock fuel while maintaining clean, consistent injection events for reliable, repeatable power.
- Brand-new S&S DM injectors (not reman)
- SAC nozzles, proprietary honing for clean, consistent holes
- Nozzles flow-matched to tight tolerances; injectors matched across the set
- Improved rate shape for smoother combustion and drivability
- Designed for the late 5.9 common-rail system (’04.5–’07)
Fitment
- 2004.5, 2005, 2006, 2007 Dodge Ram 2500/3500 — 5.9L Cummins 24V (common rail)
- “Late” 5.9 platform (2004.5–2007 model years)
What’s Included
- (6) Brand-new S&S Diesel Motorsport 45% Over Injectors — 325-45SAC-SET
Required / Recommended Parts
Support your new injectors with proven fuel system components for reliability and tuning headroom:
- CP3 Pumps & Upgrades — ensure adequate rail supply under load
- Injector Connector/Feed Tubes (Bosch) — avoid sealing/return issues
- Filtration & Lift Pumps (AirDog / FASS) — clean, consistent low-pressure supply
- Rail Hardware & Regulators — maintain commanded rail pressure
- Custom Tuning & Electronics — calibrate fueling for 45% over flow
Helpful Notes
- Proper lift pump and filtration extend injector life and help maintain rail pressure.
- We recommend fresh feed tubes with any injector install on higher-mileage trucks.
- Tuning is recommended to take full advantage of 45% over flow while controlling smoke and EGT.
FAQ
Do I need tuning with 45% over injectors?Yes. While the truck will run, custom calibration is strongly recommended to optimize rail pressure, timing, and pilot quantity for power, drivability, and smoke control.
Are these injectors truly new or remanufactured?
This listing is for a NEW S&S Diesel Motorsport set (not reman). S&S also offers reman options separately.
What size turbo and CP3 should I run with 45% overs?
Pair with an upgraded CP3 (10mm or performance pump) and an appropriately sized turbocharger to keep EGT in check. A quality lift pump/filtration system is also recommended.
Do I need new connector (feed) tubes?
Highly recommended, especially on higher-mileage trucks. Fresh tubes help ensure proper sealing and consistent injector performance.
