5.9 Cummins New 90HP Injector Set (30% Over) | DDP N305-90

Unlock reliable power gains on your 2003–2004 5.9L Cummins with the Dynomite Diesel (DDP) N305-90 brand-new injector set. These 30% over injectors deliver approximately +90 rear-wheel horsepower over stock while supporting up to 600–650 RWHP when paired with a stock CP3 (more with an upgraded pump).

This is the largest injector size commonly recommended for a stock CP3 setup, making it an excellent choice for street performance, towing, and moderate power builds that still retain good drivability.

Key Features & Benefits

• 30% increased flow over stock for noticeable torque and horsepower gains
• Approximately +90 RWHP with proper supporting modifications
• Supports up to 600–650 RWHP (stock CP3 capable; higher with upgraded fueling)
• Brand-new, OE-quality injectors — no core charge
• Precision flow-matched and balanced as a complete set for smooth, consistent performance
• SAC-style nozzles with patented pilot-hole technology (2 pilots at 0.005" + 6 holes) for improved atomization, reduced smoke, and better efficiency
• Excellent street manners with potential for modest fuel economy gains when tuned properly
• 2-year unlimited mileage warranty

Fitment

• 2003–2004 Dodge Ram 2500 / 3500 with 5.9L Common-Rail Cummins

What’s Included

• Complete set of 6 brand-new, flow-matched injectors
• Flow-test documentation
• Warranty paperwork

Notes: A pyrometer is recommended. These injectors work well on stock or mildly modified trucks and are considered the largest size suitable for a stock CP3. Professional installation and proper tuning are advised for best results and longevity.

Upgrade your early common-rail Cummins with proven Dynomite Diesel performance and reliability.