S&S Diesel 305-40SAC-SET 40% Over Injector Set – NEW (Set of 6) – Fits 2003–2004 Dodge Ram Cummins 5.9L 24V (Early)

Unlock clean, consistent fueling and proven power on your early 5.9 common-rail with this brand-new S&S Diesel 40% over injector set. Each set is flow-matched and built with SAC nozzles using S&S’s proprietary honing and OE-level QC for smooth idle, crisp throttle response, and repeatable performance.

• Size: 40% over stock (SAC nozzle)
• Part #: 305-40SAC-SET
• Quantity: Set of 6 brand-new injectors
• Build: Matched nozzles and injectors with rate-shape alignment and multi-point validation

Fitment

• 2003–2004 Dodge Ram 2500/3500, 5.9L Cummins 24-valve (early common-rail)

What’s Included

• (6) New S&S Diesel 40% Over Injectors – 305-40SAC-SET
• Flow-match calibration across the set

Recommended Parts

For best results, add these supporting items (internal CPP links only):

• Bosch Injector Feed Tubes (replace on install)
• High-quality CP3 pump (matched to fueling goals)
• Injector install/seal kit
• Upgraded fuel filtration/water separation
• High-flow rail relief valve
• ARP head studs (recommended for elevated cylinder pressure)

Why Buy from CPP Diesel

• Only authentic S&S Diesel components
• Tech-driven guidance for proper sizing and support mods
• Fast shipping and diesel-focused customer support

Helpful Notes

• Professional installation and proper calibration are recommended.
• Always start with clean fuel, new filters, and verified rail pressure supply.
• Replacing connector/feed tubes helps ensure correct sealing and long injector life.

FAQ

This set fits early 2003–2004 5.9L Cummins common-rail (Ram 2500/3500). If your truck is 2004.5–2007 (late 5.9), search our site for late-5.9 options.

Yes—calibration is recommended to optimize idle quality, smoke control, and power. Pair with an appropriate CP3 and airflow mods for best results.

We strongly recommend new Bosch feed tubes during installation to ensure proper sealing and avoid return issues.

S&S uses SAC nozzles with proprietary honing, tight nozzle matching, flow-matched injectors, and multi-point validation of injection rate-shape for clean, consistent performance.

This listing is for brand-new injectors (no core). Reman options typically require refundable cores—see reman listings for details.

For off-road/racing use where applicable. Customer is responsible for compliance with local laws and regulations.