Chevy Duramax 04.5-05 LLY Brand New 300 Percent Over Injector Set (SAC Nozzles) Dynomite Diesel

This is a Dynomite Diesel 300% over injector set for the 2004.5-2005 Chevrolet Silverado and GMC Sierra 2500 HD/3500 with the 6.6L Duramax LLY engine. It is a direct upgrade for LLY owners who have outgrown factory or mildly modified injectors and need substantially more fuel.

Each set is assembled from brand-new OE injectors rather than remanufactured cores, and is sold as a balanced and flow-matched group for the V8. The injectors use six-hole SAC nozzles set at a 158-degree spray angle along with modified injector bodies, and the 300% over sizing places them near the top of the LLY fueling range.

Owners typically reach for this set on heavily built LLY trucks chasing big power for sled pulling, dyno work, or aggressive street builds where smaller injectors simply cannot keep up. It suits a buyer who already has, or is planning, supporting hardware to match the fuel.

Because of the size, this set is not a plug-and-play stock replacement. It requires custom tuning and an upgraded fuel supply system to run correctly, and it is not for sale in California. Coverage is a 1 year unlimited-mileage warranty. Confirm sizing with your tuner before buying, since Dynomite Diesel is not responsible for issues from an incorrectly sized set.

For a maxed-out LLY combination, a brand-new 300% over set removes fueling as the limiting factor and gives tuners the headroom to make power reliably.