2001-2004 Duramax Dragonfly 50hp Injector Nozzle (0433175275DFLY)

Industrial Injection Dragon Fly 15% over injector nozzle for 2001-2004 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 6.6L LB7 Duramax. A drop-in nozzle upgrade — OE-supplier nozzles run through IIS's extrude-hone process to balance and match each nozzle, then individually tested on a state-of-the-art test stand for consistent atomization across the set.

Sold individually so you can swap one at a time or build a matched 8-pack. Comes with a new copper crush washer for installation. The 15% over rate gives a measurable bump in fuel economy and atomization vs. worn factory nozzles without requiring a tune or fuel-system upgrade.

• Dragon Fly 15% Over LB7 Nozzle
• Built with Brand-New OE Spec-Plus Parts
• Extrude-Honed for Balance Across the Set
• Individually Tested on Bench Stand
• Better Atomization, Improved Fuel Economy
• Direct Replacement
• Includes New Copper Crush Washer
• 1-Year Unlimited Mileage Warranty
• Part Number: 0433175275DFLY

• Sold individually — a full LB7 takes 8 for a matched set.