Dynomite Diesel NLLY-75 Brand New Injector Set 30% Over 75HP | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Features:

• Increases output by approximately 75 horsepower
• Flows 30 percent more than stock injectors
• Supports up to 675 rear wheel horsepower
• Built for 2004.5–2005 6.6L Duramax LLY engines
• Brand new injectors, not remanufactured units
• Balanced and matched for precise fueling
• Works with stock CP3 pump and turbo
• Ideal for street performance builds
• Requires tuning and supporting modifications
• Not intended for frequent heavy towing
• Compatible with diesel fuel systems only
• Not emissions legal in California

Give Your LLY The Power It Deserves

If you're ready to get more punch out of your 2004.5–2005 Duramax without a full-blown build, the Dynomite Diesel NLLY-75 Injector Set is the kind of upgrade that brings new life to your truck. These brand new injectors are built to flow 30 percent more than stock, giving you an extra 75 horsepower when paired with the right supporting mods. That’s a noticeable gain you’ll feel right away, more response when you hit the throttle and stronger pulls under load. Whether you’re building a fun daily driver or a weekend warrior, this set gives your LLY the fuel it needs to breathe harder and push further. They’re balanced and matched, so your truck runs smooth even as you crank up the power. Plus, they’re the largest injectors you can run without upgrading your stock CP3 or turbo, which makes them a smart and affordable option for serious gains. Just a heads up, these aren’t built for hauling trailers cross-country, but for drivers who want a livelier, more responsive truck, they hit the mark.

Calibrated To Push Performance Within Safe Limits

The Dynomite Diesel NLLY-75 Injector Set is engineered for LLY Duramax trucks from 2004.5 to 2005 and offers a substantial increase in fuel delivery with a 30 percent overstock flow rate. This level of output supports up to 675 rear wheel horsepower, provided the truck is equipped with proper supporting modifications such as tuning, intake, exhaust, and cooling upgrades. These injectors are the maximum recommended size for use with a factory CP3 pump and turbo setup, which allows owners to boost performance without overhauling their fuel system. Each injector is sold brand new, not remanufactured, and is carefully balanced and matched to ensure consistent fueling across all cylinders, reducing the risk of uneven combustion or excessive smoke. These are designed for high-performance street applications where towing is not the primary goal. Extended towing with a stock turbo could lead to elevated EGTs and reduced reliability, so these injectors are best suited for spirited driving and power-focused builds. For those who want more from their LLY while maintaining system compatibility, this injector set offers a well-calibrated and proven upgrade.

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

Notes:

• Fits 2004.5–2005 GM 6.6L Duramax LLY engines
• Brand new injectors, not remanufactured
• Flows 30 percent more fuel than stock injectors
• Capable of supporting up to 675 RWHP with proper mods
• Sold as a balanced and matched set for smooth operation
• Works with stock CP3 pump and turbo systems
• Custom engine tuning is required for optimal performance
• Not recommended for frequent or heavy towing applications
• Designed for street performance and power builds
• Not emissions compliant and not for sale in California