Industrial 0986435504-R5 80% Over Injector | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY

Features:

• 80% over for increased fuel delivery
• 45 LPM flow for racing performance
• Supports high-horsepower engine builds
• Designed for LLY 6.6L Duramax engines
• Ideal for sled pulling and competition use
• Precision machining ensures consistent spray pattern
• Compatible with upgraded fuel systems
• Sold individually for flexible replacement options
• Requires 8 injectors for a complete set
• Core refund available with usable returns
• Boosts throttle response and engine output
• Reliable performance under extreme pressure

Push More Power Without Pushing Too Far

If you’re looking to give your Duramax the kind of fuel it needs to stay competitive without going overboard, the Industrial Injection 80% Over Injector hits the sweet spot. It’s perfect for those who want serious gains for race days or sled pulls but still want a setup that stays a little more manageable than full race builds. Designed specifically for the 2004.5–2005 6.6L LLY Duramax, this injector steps up your fuel delivery in a big way while maintaining a balance of performance and control. With an 80% increase in flow, this injector supports high-horsepower applications while offering smoother throttle response and power output that you’ll feel immediately. Whether you're competing or just love having a high-performing setup, this upgrade gets fuel to your cylinders exactly when and how it's needed. It’s sold individually, so you can pick up a single replacement or build a full set depending on your needs. Add in a refundable core charge with rebuildable returns, and you’ve got a solid, race-ready option that delivers without going to extremes.

Built To Handle Fuel Demands At Full Load

The Industrial Injection 0986435504-R5 80% Over Injector is engineered to deliver a precise 45 liters per minute of fuel, making it a powerful step up for modified Duramax engines. Designed for the 2004.5–2005 GM Silverado and Sierra 2500HD/3500HD trucks with the LLY 6.6L engine, this injector provides a high-flow solution that supports advanced performance builds. The 80% over capacity allows for increased fuel volume under load, which helps maintain consistent combustion during hard pulls or wide-open throttle conditions. It’s a proven option in competition environments, offering the reliability and responsiveness racers depend on when tuning for more power. Each injector is carefully machined to ensure spray pattern accuracy, which is key to efficient combustion and long-term engine health. Sold individually, these injectors allow for flexibility in replacement or upgrade scenarios. A refundable core charge is applied at purchase, and customers can recoup that cost by sending in their old injectors in rebuildable condition. For serious power goals that demand serious fueling, this injector delivers the numbers and consistency you need.

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

Notes:

• Injector is intended for competition and race use
• Not designed for emissions-compliant or daily street use
• 80% over fuel output requires proper engine tuning
• Sold individually, eight units required for full engine set
• Fits 2004.5–2005 GM 6.6L Duramax LLY engines only
• Core charge applies at purchase and is refundable
• Core refund available with rebuildable injector returns
• Best suited for sled pulling, drag racing, or dyno builds
• Must be used with supporting fuel system modifications
• Injector flow rated at 45 liters per minute