Dynomite Diesel LLY-75 75HP Injector Set | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Features:

• 75HP injector set for LLY Duramax engines
• Flows 30% over factory fuel injector rate
• Supports up to 675 RWHP with proper mods
• Recommended max size for stock CP3 pump
• Works with stock or upgraded turbo setups
• Matched and balanced remanufactured injector set
• Ideal for high-performance diesel builds
• Not intended for heavy or frequent towing
• Compatible with 2004.5–2005 Silverado and Sierra
• Diesel only, not for use with gas engines
• Sold as a complete set of six injectors
• Not legal for sale or use in California

Unlock The Hidden Horsepower In Your LLY Duramax

If you’re looking to wake up your 2004.5–2005 LLY Duramax, the Dynomite Diesel LLY-75 75HP Injector Set is the key to unlocking serious power without overcomplicating your build. Flowing 30 percent over stock, this set is designed for truck owners ready to push their rigs to 675 rear-wheel horsepower with the right supporting modifications. These injectors are the largest size recommended for use with your stock CP3 pump and turbo, offering an ideal blend of performance and reliability. Whether you’re chasing street power, building for dyno pulls, or adding some punch to a daily driver, this matched and balanced set delivers consistent fueling across all cylinders. Installation is straightforward, and because they’re remanufactured to strict standards, you get the benefit of performance at a more affordable price. Just keep in mind that they’re not intended for frequent towing on a stock turbo setup. Built for power-hungry Duramax owners, this injector set brings your LLY to life.

Balanced High Flow Injectors For Controlled Performance Gains

The Dynomite Diesel LLY-75 Injector Set is a precision-calibrated, remanufactured solution for 2004.5–2005 GM 6.6L LLY Duramax engines seeking high-performance fuel delivery. Engineered to flow 30 percent over stock, this injector set supports power outputs up to 675 rear-wheel horsepower when paired with appropriate tuning, intake, exhaust, and turbo upgrades. These injectors are the maximum size recommended for those still running a factory CP3 pump or turbocharger, striking a balance between fuel volume and system limitations. Each injector is flow-matched and balanced to ensure consistent cylinder-to-cylinder fueling, which helps maintain clean combustion and drivability even at higher output levels. This level of precision is especially important when increasing horsepower to avoid excessive smoke or EGT spikes. The set is sold complete for full engine coverage and built specifically for diesel fuel use. These injectors are not suited for towing-heavy applications and are not emissions-compliant for use in California. For performance-focused drivers with a dialed-in LLY build, this injector set delivers the reliability and output needed to take things up a notch.

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

Notes:

• Designed for 2004.5–2005 GM 6.6L LLY Duramax engines
• Injector set flows 30% over stock specifications
• Capable of supporting up to 675 rear-wheel horsepower
• Largest injector size recommended for stock CP3 and turbo
• Ideal for performance builds with tuning and supporting mods
• Not intended for frequent or heavy towing with a stock turbo
• Sold as a complete, flow-matched and balanced set
• Remanufactured for consistent performance and affordability
• Diesel fuel only, not compatible with gasoline engines
• Not legal for sale or use in the state of California