New 15% Over Injector

Features:

• Fits 2004.5–2005 Duramax LLY engines
• Delivers 15% over stock fuel output
• Adds approximately 50 horsepower
• Ideal for race and sled pull applications
• Supports 22 LPM fuel delivery rate
• Built for extreme performance conditions
• Brand-new injector (not remanufactured)
• Sold individually (one injector per unit)
• Designed for high-flow fuel demands
• Core charge refundable upon rebuildable return
• Increases torque and throttle response
• Helps maintain consistent fuel pressure

Unleash Extra Fuel And Power When It Matters Most

If you're building your 2004.5–2005 Duramax LLY for serious competition or just want to give your truck a performance edge, the Industrial Injection 15% Over Dragon Fly Injector is the upgrade you’ve been looking for. This high-performance injector adds roughly 50 horsepower and is built to support demanding race or sled pull applications where stock fueling just won’t cut it. It’s designed to push more fuel, more efficiently, helping your engine respond faster and pull harder when you hit the throttle. Whether you’re battling it out on the track or pushing your rig to its limits, that extra fuel delivery makes all the difference. It’s a brand-new unit too, not a reman, so you’re getting clean, precise fueling right out of the box. This injector is sold individually, making it perfect for custom setups or single-cylinder replacements. If performance is your goal, this upgrade delivers the boost in flow and confidence you need to stay ahead.

Built For Precision Flow Under Extreme Load

The Industrial Injection 0986435504DFLY Dragon Fly Injector is engineered to deliver 15 percent more fuel than stock, offering 22 liters per minute of flow capacity to meet the demands of high-performance Duramax LLY engines. This injector is designed specifically for 2004.5–2005 GM Silverado and Sierra 2500HD and 3500HD trucks, ensuring proper fitment and compatibility with factory systems. It is a new injector, not a remanufactured unit, which means it arrives with OEM-level precision and zero prior wear. The added fuel flow helps maintain boost and combustion efficiency during wide-open throttle events, especially in racing or sled pulling environments where fuel demand spikes rapidly. Accurate metering at high flow rates helps preserve combustion balance and contributes to smoother throttle response under load. This injector supports increased torque output while preserving consistent rail pressure across all cylinders. It is sold individually and includes a refundable core charge, provided the returned unit is rebuildable. For high-output builds where fuel delivery must be spot-on, this injector provides dependable flow and race-ready performance.

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

Notes:

• Fits 2004.5–2005 GM Silverado and Sierra 2500HD/3500HD with 6.6L Duramax LLY
• Injector is brand new, not remanufactured
• Provides approximately 15% more fuel over stock
• Delivers around 50 additional horsepower per injector
• Supports 22 LPM flow rate for high-demand applications
• Designed for extreme racing and sled pulling use
• Sold individually (one injector per unit)
• Core charge is refundable with rebuildable core return
• Picture is a representation and may not reflect the exact product
• Not recommended for stock or daily-driven setups without supporting mods