For 04-05 Chevy Silverado GMC Sierra 3500 6.6L LLY Duramax Fuel Injectors 8Pcs

Fuel Injectors for Chevy Silverado and GMC Sierra 3500

This set of eight fuel injectors delivers consistent fuel atomization for the 6.6L LLY Duramax diesel engine, helping restore smooth combustion and reliable power delivery on 2004 to 2005 Chevy Silverado and GMC Sierra 3500 trucks.

Overview

This eight-piece fuel injector set is built to replace worn or failing injectors on the 6.6L LLY Duramax engine. Each injector meters and atomizes diesel fuel for proper combustion, supporting steady idle quality and throttle response. It is intended for owners and technicians servicing 2004 to 2005 Chevy Silverado and GMC Sierra 3500 models.

Built For Performance

• Set of eight injectors covers both banks of the V8 engine
• Precision-machined nozzle tips support consistent fuel spray patterns
• Built to withstand the high pressures of common rail diesel systems
• Direct replacement form factor for the LLY Duramax injector location
• Sold as a complete set to simplify a full injector service

Fits These Machines

• for Chevy Silverado 3500 2004 to 2005 with 6.6L LLY Duramax
• for GMC Sierra 3500 2004 to 2005 with 6.6L LLY Duramax

On-The-Job Use

• Restoring idle quality on trucks with rough or misfiring injectors
• Full injector replacement during top-end engine service
• Routine maintenance on high-mileage LLY Duramax work trucks

Specs At A Glance

Good To Know

Q: Do these fit both the Chevy Silverado and GMC Sierra 3500? A: Yes, both models used the 6.6L LLY Duramax in 2004 to 2005. Confirm your engine code and model year before ordering.

Q: Should all eight injectors be replaced at once? A: Replacing the full set is common practice when injectors show wear, since balanced flow across all cylinders supports even running. A technician can advise based on your diagnostic results.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.