Chevy Duramax 04.5-05 LLY Brand New 250% Over Injector Set (SAC Nozzles) Dynomite Diesel

This Dynomite Diesel 250% over injector set fits the 2004.5-2005 Chevrolet Silverado and GMC Sierra 2500 HD/3500 with the 6.6L Duramax LLY. It is aimed at LLY owners who want a meaningful jump in fueling beyond stock without going all the way to the largest injectors offered.

The set is assembled from brand-new OE injectors, not remanufactured cores, and arrives balanced and flow-matched for the V8. Nozzles are six-hole SAC units set at 158 degrees, and the injector bodies are modified to support the 250% over sizing.

Buyers typically choose this size for hard-driven street trucks, tow rigs that also see spirited use, and moderately built engines where the goal is strong, repeatable power rather than a pure competition setup.

This set is not a direct stock replacement. It needs custom tuning and a capable fuel system to deliver its potential, and it is not for sale in California. It carries a 3 year unlimited-mileage warranty. Confirm sizing with your tuner first, as Dynomite Diesel is not liable for problems caused by an incorrectly sized set.

For an LLY that needs more than a mild injector but does not require maximum flow, the 250% over set is a well-balanced choice with strong warranty backing.