Exergy 04-05 Duramax LLY New 200% Over Injector Set of 8
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This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
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Past a certain point, more timing and more boost stop helping because the injector simply cannot pass enough fuel. The Exergy 04-05 Duramax LLY New 200% Over Injector Set of 8 (store SKU xrgE02 10252) is the step where the Duramax LLY stops being injector-limited.
- Flows 200% over stock, so the extra fuel is there when the tune calls for it — plan supporting fuel supply and calibration to match.
- New units, not remanufactured — every wear part is new rather than an inspected core, which is what you want on a build you do not intend to revisit.
- Supplied as a set of 8 — a full engine's worth, because mixing new injectors with tired ones puts the cylinders out of balance.
Fits: 2004-2005 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD with the 6.6L Duramax LLY. The 2004 split is mid-year: earlier-2004 trucks are LB7 and take an LB7 part instead.
Perfect for a built truck whose pump and air are already sorted and whose injectors are now the limit.
Shipping Height: 8.0
Shipping Length: 14.0
Shipping Width: 10.0