Product Description
S&S Diesel 305-500SAC-SET is a brand-new 500% over injector set for the EARLY 5.9L Cummins (2003–2004, 24-valve, 305 HP rating). Built with S&S EDM/honed SAC nozzles, precision flow-matching, and race-focused internals, these injectors support extreme fuel mass for max-effort competition builds when paired with adequate air and supply fuel.
- Brand-new S&S bodies (not reman)
- EDM/honed SAC nozzles, flow-matched to tight tolerances
- Injector build spec matched to nozzle flow rate
- Ideal for dedicated race/comp applications with appropriate turbo(s), CP3, and lift pump
Fitment
Fits 2003–2004 Dodge Ram 2500/3500 5.9L Cummins 24V (EARLY 5.9, 305 HP). Not for late 2004.5–2007 (325 HP) trucks.
What’s Included
- (6) Brand-new S&S injectors — 500% over
- Set is flow-matched by S&S
Recommended Parts (for proper support & reliability)
- Injector Feed Tube Set (2003–2018 Cummins 5.9/6.7) — replace feed tubes during any injector install
- High-Flow or Stroker CP3 Pumps (03–07 Cummins) — sufficient high-pressure supply for 500% over
- FASS 250 GPH Lift Pump (1998.5–2004 5.9 Cummins) — clean, air-free fuel at volume
- 5.9L Cummins Injector Category — shop related components and sizes
- Head Studs / Fasteners — recommended for high cylinder pressure builds
Helpful Notes
- This size is for all-out race use. Tuning, turbo(s), pump(s), trans, and fuel system must be matched.
- Early vs. Late 5.9: Early (2003–2004) is 305 HP; Late (2004.5–2007) is 325 HP. Verify before ordering.
FAQ
Will these fit my 2005 truck?No. This set is for EARLY 5.9 (2003–2004). For 2004.5–2007 LATE 5.9, use the late-style injectors.
Do I need new feed tubes?Yes, we strongly recommend replacing feed tubes to ensure proper sealing and protect your new injectors. See our CPP feed tube set.
What supporting mods are required for 500% over?High-flow lift pump, high-output/stroker CP3, sufficient turbo(s), head studs, and custom tuning. Start with CP3 options and a 250 GPH lift pump.
Are these new or reman?This listing is for new injectors. We also carry reman options; contact us if you need the reman set.
Why SAC nozzles?SAC nozzles with S&S’ proprietary honing provide clean, consistent holes and precise flow matching for set balance at extreme sizes.
