Product Description
S&S Diesel 305-20SAC-SET is a NEW (not reman) set of six 20% over injectors engineered for the EARLY 5.9 common-rail platform. Built with SAC-style nozzles and matched to tight tolerances, this set delivers clean fueling and reliable power on 2003–2004 Ram Cummins 5.9L 24V trucks.
- NEW injectors (not reman), 20% over stock flow
- SAC nozzle design, flow-matched as a set for smooth operation
- Great foundation for mild performance builds and towing tunes
- Direct fit for early 5.9 CR (2003–2004) with correct nozzle spec
Fitment
- Dodge Ram 2500/3500 — 2003–2004 Cummins 5.9L 24V (EARLY 5.9 common rail)
Note: “Early 5.9” coverage is 2003–2004. Late-2004.5/2005 use a different injector specification. Verify build date before ordering.
What’s Included
- (6) NEW S&S Diesel Motorsport injectors — 20% over (EARLY 5.9 spec)
- Flow-matched set with SAC nozzles
Recommended Parts (Internal Links)
For best results and warranty compliance, pair with fresh high-pressure components and clean supply filtration.
- Injector Connector Tubes (Set)
- CP3 High-Pressure Pump (03–07 Cummins)
- Upgraded Fuel Filter/Filtration Kit
- Fuel System Seals & Install Hardware
- 2003–2004 5.9L 24V Category
Helpful Notes
- Core Charge: core charge is $900 for this set
- Tuning: 20% over generally runs well on quality tow/Street calibrations; consult your tuner for smoke control and rail pressure targets.
- Break-In: Use clean fuel, new filter(s), and follow proper injector install & line flush procedures.
Will these fit my 2005 5.9?
No. This is the EARLY 5.9 set for 2003–2004 trucks. Late-2004.5/2005 require the late 5.9 injector spec. Check your build date.
Do I need tuning for 20% over?Good calibrations are recommended to optimize timing, duration, and rail pressure. Many customers run towing/Street tunes for clean power.
Are these new or reman?This listing is for NEW S&S injectors (set of 6). Reman options exist under different part numbers.
What core charge should I expect?Vendors typically apply a $900 refundable core on early 5.9 sets. Core terms vary; see your cart for the exact amount and return window.
Do I need new injector tubes?Yes—install with new connector tubes and torque per spec. Reusing worn tubes can cause sealing issues and balance rates problems.
