Product Description
S&S DIESEL 325-450SAC-SET is a brand-new, flow-matched 450% over injector set (6) engineered for late 2004.5–2007 Ram 2500/3500 5.9L Cummins 24V common-rail applications. Built with EDM/honed SAC nozzles and OE-style calibration across four pressure/energizing points, these injectors support extreme fuel demand for competition builds while maintaining tight balance cylinder-to-cylinder.
Why S&S Diesel Motorsport
- SAC nozzle technology and proprietary honing for clean, consistent orifices.
- Nozzles flow-matched to ~1% and complete injectors to ~3% per set (OE-level standards).
- Injection profile (rate shape) aligned; internal body mods at very high flow sizes for improved rate control.
Fitment
- 2004.5, 2005, 2006, 2007 Ram 2500/3500 with 5.9L Cummins 24V (late common-rail)
- Direct replacement injector set for late 5.9L common-rail systems (2004.5–2007)
What’s Included
- (6) Brand-new S&S Diesel Motorsport 450% over injectors (SAC nozzle), flow-matched as a set
- Installation instructions overview
Recommended Supporting Parts
- Injector Feed/Connecting Tubes (replace during install): CPP FEED TUBE SET 2003–2018 5.9/6.7L
- CP3 Injection Pump (stock to 12–14mm builds depending on power goals): 2003–2007 CUMMINS 5.9L CP3 PUMPS
- Injector Install/Seal Kits & related hardware (model-year specific): 5.9L CUMMINS CR INJECTORS & INSTALL PARTS
Usage Notes
- Competition/Race Use: 450% over injectors require extensive supporting mods (high-flow CP3(s), supply pump, turbo system, fuel system upgrades, custom tuning).
- Warranty: S&S injectors are backed by a 2-year warranty (see manufacturer terms).
Frequently Asked Questions:
Do I need new feed/connecting tubes with these injectors?Yes—reusing worn tubes can compromise sealing and injector performance. We recommend replacing them during every injector job: CPP FEED TUBE SET.
Is a stock CP3 pump enough for 450% over injectors?No. You’ll need a high-output CP3 (or dual CP3s) and adequate lift-pump/supply to maintain commanded rail pressure under load. Start here: CP3 PUMPS FOR 2003–2007 5.9L.
Are these street legal?These injectors are intended for off-road/competition use only where permitted. Always verify local emissions regulations before installation.
What turbo setup should I run?Air system must match the fuel—expect to run large single or compound turbos, high-flow intercooling, and appropriate exhaust. Contact CPP for build-matched recommendations.
What is the warranty?S&S Diesel Motorsport injectors carry a 2-year manufacturer warranty; terms and coverage apply to properly installed and tuned vehicles.
Fitment and technical details referenced from S&S Diesel Motorsport’s Late 5.9L Cummins injector family page; sizing includes up to 450% over with internal body modifications at very high flow rates.
