Chevy Duramax 01-04 LB7 Brand New 300% Over Injector Set (SAC Nozzles) Dynomite Diesel

This is a Dynomite Diesel 300% over injector set for the 2001-2004 Chevrolet Silverado and GMC Sierra 2500 HD/3500 with the 6.6L Duramax LB7 engine. It is aimed at LB7 owners who have outgrown stock or mild injectors and need a large jump in fuel delivery.

The set is assembled from brand-new OE injectors instead of remanufactured cores and ships balanced and flow-matched for the V8. Nozzles are six-hole SAC units set at a 158-degree spray angle, with modified injector bodies supporting the 300% over sizing near the top of the LB7 range.

Builders typically select this size for heavily modified LB7 trucks used in sled pulling, dyno competition, or big-power street builds where fueling is the bottleneck. It fits a buyer who already has, or is building toward, supporting hardware.

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

On a maxed-out LB7, a brand-new 300% over set clears the fueling limit and gives the tuner room to build reliable power.