Dynomite Diesel NLLY-100 Brand New Injector Set 45% Over 100HP | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Features:

• Brand new 45% over fuel injector set
• Supports 750–800 RWHP with proper upgrades
• Built for 2004.5–2005 Duramax LLY engines
• Balanced and matched for consistent performance
• Requires dual or modified CP3 fuel system
• Upgraded turbo(s) and custom tuning required
• Not recommended for frequent heavy towing
• Diesel specific for 6.6L Duramax platform
• High-flow design for performance applications
• Not legal for sale or use in California

Unlock The Hidden Power Inside Your LLY Duramax

If you’re ready to transform your 2004.5–2005 Duramax from tough to downright intimidating, the Dynomite Diesel NLLY-100 45% Over Injector Set is your ticket. These brand new injectors are built for performance enthusiasts who want to break past factory limits and chase serious horsepower. Flowing 45 percent over stock, this set can support up to 750–800 rear wheel horsepower when combined with the right upgrades like a dual CP3 setup, upgraded turbos, and custom tuning. You’ll get balanced and matched injectors right out of the box, giving you clean fueling and consistent performance across all cylinders. This setup is designed for aggressive builds, not daily towing duty, so if your goal is big power and not pulling trailers, you’re in the right place. It’s a true plug-in for serious performance and one of the most important steps in turning your Duramax into a high-output machine. When you're done, your truck won’t just sound mean, it will deliver the power to back it up.

Built For Performance Tuned For High Output Duramax Builds

The Dynomite Diesel NLLY-100 Injector Set is engineered for 2004.5–2005 GM Silverado and Sierra HD models equipped with the 6.6L LLY Duramax engine. These injectors are brand new, not remanufactured, and flow 45 percent over stock for significantly increased fueling potential. Capable of supporting 750–800 RWHP, these injectors require a fully upgraded fuel and air system, including either a dual or modified CP3 pump setup, performance turbos, and precise ECM tuning. Each injector is flow matched and balanced to ensure consistent fueling across all eight cylinders, which is critical in high-output builds where imbalance can lead to poor combustion or long-term engine issues. The injectors are designed for diesel-only use and are not recommended for trucks that see frequent or heavy towing due to their aggressive fueling characteristics. They are sold as a complete set and intended for competition or off-road performance applications. Not approved for sale in California, these injectors are built for serious power where emissions regulations allow.

Fits: 2004.5, 2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Notes:

• Injectors are brand new, not remanufactured.
• Flows 45% over stock, built for performance use.
• Capable of 750–800 RWHP with supporting mods.
• Requires dual or modified CP3 fuel system.
• Upgraded turbochargers and custom tuning are mandatory.
• Not recommended for frequent or heavy towing applications.
• Sold as a balanced and flow-matched set.
• For use in 2004.5–2005 GM 6.6L Duramax LLY engines only.
• Not for sale or use in California due to emissions regulations.