Product Description
S&S Diesel 325-400SAC-R-SET 400% Over Late 5.9 Injector (Reman) — Set of 6 — 2004.5–2007 Ram Cummins 5.9L 24V
Turn the late 5.9L Cummins into a fuel-delivery heavyweight. This remanufactured S&S Diesel Motorsport 400% over injector set uses honed SAC nozzles and tight flow-matching to support extreme power with consistent, repeatable performance. Sold as a matched set of six for common-rail 5.9L.
- Reman injector bodies with SAC performance nozzles
- Flow-matched as a set for precision fueling
- Built for high fuel mass delivery in competition applications
- Core required (see notes below)
Fitment
Fits 2004.5–2007 Ram 2500/3500 5.9L Cummins (late common-rail). Not for 2003–early 2004. Use with appropriate supporting fuel system and tuning.
What’s Included
- (6) S&S Diesel reman common-rail injectors — 400% over (late 5.9)
- Matched nozzle set and internal setup per S&S spec
- Core return instructions
Recommended Supporting Parts
- 03–07 5.9L Cummins Fuel Injectors & Accessories
- 03–07 5.9L Fuel System Components
- Injector Connector/Feed Tube Set (03–18 Cummins)
- OE High-Pressure Injector Lines (03–07 5.9L)
- Shop All S&S Injectors at CPP
Core & Notes
- Core charge/return required on reman sets; injectors ship per CPP policy after core selection.
- Professional installation recommended; verify rail pressure capability, lift pump supply, and tuning before use.
FAQ
Will these fit my 2004 Ram 5.9?Only if it’s a 2004.5 “late” common-rail truck (mid-year split). Early 2003–early 2004 use a different injector family.
Do I need to replace connector/feed tubes when installing?It’s strongly recommended on high-mile trucks. Fresh tubes help ensure proper sealing and injector performance.
Are these street legal?400% over injectors are intended for race/competition use. Check local and federal emissions laws before installation.
What supporting mods do I need?High-flow lift pump and filtration, healthy CP3, adequate rail relief, and appropriate tuning. Consider upgraded injector lines and feed tubes.