LB7 Duramax New 50HP Injector Set | 25% Over DDP NLB7-50

Upgrade your 2001–2004 6.6L LB7 Duramax with the Dynomite Diesel Products (DDP) NLB7-50 brand-new injector set. These injectors deliver a true 25% increase in fuel flow for approximately +50 rear-wheel horsepower while remaining street-friendly, towing-capable, and efficient.

Built from brand-new injectors (not remanufactured) and precision flow-matched as a complete set of eight, they provide balanced fueling across all cylinders for smooth idle, clean operation, and consistent power. They are safe to run on near-stock trucks with minimal supporting modifications and can support 600–625 RWHP when paired with the right turbo, fuel system, and tuning upgrades.

Key Benefits

• +50 RWHP (approximate) over stock with excellent drivability
• 25% over stock flow for noticeable power without sacrificing manners or MPG
• Brand-new construction — no core charge or return required
• Fully balanced and matched set for even cylinder contribution
• Ideal for daily driving, light-to-moderate towing, and mild performance builds
• Supports higher power levels (600–625 RWHP) with proper supporting mods

Fitment

• 2001–2004 Chevrolet Silverado 2500HD / 3500HD
• 2001–2004 GMC Sierra 2500HD / 3500HD
• 6.6L Duramax LB7 only

Important Notes

• A pyrometer is strongly recommended to monitor exhaust gas temperatures.
• LB7 high-pressure injector lines are prone to internal rust and contamination after 40,000–50,000 miles. Strongly consider replacing the lines at the same time to protect your new injectors.
• Not legal for sale or use in California.

These injectors give LB7 owners a reliable, plug-and-play style power increase that improves both performance and everyday usability. Whether you’re replacing tired factory injectors or looking for a mild performance bump, the DDP NLB7-50 set delivers clean power and long-term durability.