Dynomite Diesel LLY-75 Remanufactured 75HP Injector Set (30% Over)

Unlock serious performance from your 2004.5–2005 LLY Duramax with the Dynomite Diesel LLY-75 remanufactured injector set.

These 30% over injectors deliver a strong 75 horsepower increase while remaining compatible with the factory CP3 pump and turbo. With the right supporting modifications they can support up to 675 rear-wheel horsepower, making them the largest injector size recommended for a stock fuel system.

Each injector is remanufactured using brand-new OE-quality internal components for durability and consistent performance. The complete set of eight is precision balanced and flow-matched so every cylinder contributes evenly, giving you smoother power delivery, better throttle response, and clean, efficient operation.

Key Features

• 30% increased flow over stock
• +75 HP gain
• Supports up to 675 RWHP with supporting mods
• Remanufactured with new OE internals
• Balanced and matched set of 8 injectors
• SAC nozzles with patented dual-pilot hole technology for improved atomization
• Noticeable power increase with typically improved fuel economy

Fitment 2004.5–2005 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L LLY Duramax

These injectors are an excellent choice for street performance and light-to-moderate use. They are not recommended for frequent or heavy towing applications when running a stock turbo.