Product Description
S&S Diesel 325-300SAC-SET is a BRAND-NEW, 300% over injector set (6) for the late 5.9L Cummins—built for serious fuel delivery and high-horsepower competition builds. Each set uses SAC nozzles, S&S’s proprietary honing, and tight flow matching for consistent cylinder-to-cylinder fueling.
Fitment
- 2004.5–2007 Dodge Ram 2500/3500, 5.9L Cummins 24V (common rail)
- “Late” 5.9 configuration (2004.5+)
Why S&S 300% Over
- SAC nozzles with proprietary honing for clean, consistent holes
- Nozzles flow-matched to ~1% per set; injectors matched to ~3% per set
- Internal body modifications at high sizes to improve rate shape
- Built to OE test standards for repeatable performance
What’s Included
- (6) New S&S Diesel Motorsport late 5.9 injectors – 300% over
- Set is flow-matched and ready for tuning & installation
Recommended Supporting Parts
- 03–07 Cummins CP3 Injection Pumps – stock to performance CP3s to feed 300% over injectors
- 03–07 Fuel System Components – lift pumps, filtration, big-line kits
- Injector Feed Tubes (03–07 5.9L) – recommended any time injectors are replaced
- Fuel Rail Assembly (03–07 5.9L) – refresh rail, sensor, and PRV for stable pressure
- High-Pressure Rail Relief Valve (03–07)
- S&S Injectors — 04.5–07 Cummins (Category)
Install Notes
- Professional installation strongly recommended
- Replace feed tubes and use correct torque & cleanliness procedures
- Appropriate ECU calibration/tuning is required with 300% over sizing
- For off-road/competition builds; verify local emissions regulations
FAQ
Is this the right set for my truck?Yes—this set fits the late 5.9L common-rail Cummins used in 2004.5–2007 Ram 2500/3500. If your truck is 2003–early 2004, see our early 5.9 listings.
How big is 300% over?“300% over” refers to nozzle flow vs. stock. Actual delivered fuel also depends on rail pressure, pulse width, and your high-pressure supply (CP3). Proper tuning and sufficient CP3 capacity are mandatory.
Do I need to upgrade my CP3 and lift pump?For 300% over injectors, a built CP3 (or dual fuelers) plus a quality lift pump and filtration are required to maintain commanded rail pressure under load.
Should I replace injector feed tubes?Yes—fresh tubes help ensure proper sealing and prevent contamination. See our 03–07 5.9L feed tube listings above.
Are these balanced/matched?Yes—S&S flow-matches nozzles and complete injectors to tight tolerances for a smooth, consistent set.
What about emissions and street use?300% over injectors are intended for off-road/competition use where allowed. Check local regulations before purchase/installation.
Price references: S&S Diesel lists Late 5.9 sets with a price range depending on size/type; Thoroughbred Diesel often uses call-for-price on large sizes. For current CPP pricing and availability, add to cart or contact us.
