Race4 50% Over Nozzle

Features:

• Fits 2001–2004 Duramax LB7 diesel engines
• 50 percent over stock fuel flow capacity
• Each nozzle flows approximately 33 liters per minute
• Engineered for extreme race and sled pull use
• Supports high horsepower and advanced tuning
• Precision machined for consistent spray pattern
• Improves fueling under heavy load and high boost
• Sold individually for flexible replacement options
• Requires quantity of 8 for a full injector set
• Not recommended for stock or lightly tuned trucks
• Ideal for use with upgraded fuel systems
• Backed by Industrial Injection race-proven performance

Fuel Your Power Goals Without Holding Anything Back

When it’s time to take your 2001–2004 Duramax LB7 to the next level, the Industrial Injection Race4 50% Over Nozzles are the upgrade that helps you make real, noticeable power. Designed for race trucks and serious sled pullers, these nozzles bring a 33 LPM flow rate to the table, 50 percent more fuel than stock. That kind of increase gives you the fueling headroom needed for big turbo setups, hotter tunes, and heavier loads on the track or dirt. If you're chasing performance that leaves stock builds in the dust, these nozzles let your truck breathe and burn like it should. Built with precision and sold individually, you can pick up just what you need or grab all eight to complete your full injector set. Pair them with the right supporting mods, and you’ve got a recipe for aggressive response and serious horsepower gains. Bottom line, these nozzles are made to feed builds that don’t settle.

Calibrated For Precision Flow In Competitive Conditions

The Industrial Injection 0433175275-R4 Race4 Nozzles are engineered to deliver 50 percent more fuel than OEM nozzles, pushing approximately 33 liters per minute per injector. Made specifically for the 2001–2004 GM 6.6L Duramax LB7 platform, these nozzles are precision-machined to maintain balanced spray patterns and optimal combustion under high load and elevated boost. They are best suited for competition environments where fuel demand far exceeds what the factory injectors can provide. With a focus on high-performance use, these nozzles are ideal for applications featuring upgraded CP3 pumps, larger turbos, and aggressive tuning. Each nozzle is sold individually to allow for flexible replacement, though a full set of eight is required to complete the system. Installation should be handled by experienced professionals and tuned accordingly to prevent over-fueling or imbalanced output. With reliability and flow consistency built into every unit, the Race4 series bridges the gap between moderate and extreme diesel performance.

Fits: 2001, 2002, 2003, 2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Notes:

• Designed for 2001–2004 GM 6.6L Duramax LB7 engines
• Provides 50% more fuel flow compared to stock nozzles
• Each nozzle delivers approximately 33 liters per minute
• Intended for extreme racing and sled pull applications
• Requires supporting modifications such as upgraded turbos and fuel pumps
• Custom tuning is required to optimize performance and prevent over-fueling
• Nozzles are sold individually for flexible purchasing
• Quantity of 8 required for a complete injector set
• Not recommended for stock or mildly modified trucks
• Precision-machined for accurate fuel spray and balanced combustion