S&S Diesel LB7-400SAC New 400% Over Injector | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Features:

• Brand New 400% Over Fuel Injector
• SAC-style nozzle for added durability
• Increased fuel injector lifespan
• Stock fuel delivery, no calibration required
• CARB compliant (EO number D-756-2)
• Direct bolt-on replacement
• Backed by a 2-Year Warranty
• Sold individually

Brand New 400% Over Injector for GM 6.6L Duramax LB7

Take your truck to the next level with the S&S Diesel New 400% Over Injector, designed specifically for 2001-2004 GM 6.6L Duramax LB7 engines. Featuring an incredible 400% over design, these injectors quadruple the fuel capacity compared to stock injectors. This massive increase in fuel delivery translates to unparalleled horsepower and torque, making your truck capable of handling extreme performance demands and the most rigorous tasks with ease. What's more, the brand new construction of the S&S Diesel injectors ensures that each component is pristine and free from any prior wear or defects. This guarantees optimal performance and longevity right out of the box, providing maximum reliability and efficiency. Unlike remanufactured injectors, which are restored to like-new condition, brand new injectors offer the assurance of untouched, factory-fresh quality, making them a premium choice for those seeking the best in performance upgrades.

SAC-Style Nozzle with Simple Bolt-On Installation

Equipped with a SAC-style nozzle, these injectors are engineered for enhanced durability. The SAC-style nozzle is designed to withstand higher pressures and more demanding conditions than traditional VCO nozzles. This increased durability significantly reduces wear and extends the injector's lifespan, ensuring a consistent and reliable fuel supply even under the most extreme conditions. The superior build quality reflects S&S Diesel’s commitment to excellence, offering long-lasting and dependable performance. Better yet, installation of the S&S Diesel injectors is straightforward and hassle-free. Designed as a direct bolt-on replacement for stock injectors, these units require no additional modifications or calibrations. This ease of installation minimizes downtime and allows you to quickly upgrade your engine’s capabilities.

Fits: 2001-2004 GM 6.6L Duramax LB7

Year Ranges	Make	Model	Series	Engine
2001-2004	GM/Chevrolet/GMC	Silverado/Sierra	2500HD/3500HD	6.6L Duramax LB7/6.6L Duramax LLY

Property	Values
Year Ranges	2001-2004
Make	GM/Chevrolet/GMC
Model	Silverado/Sierra
Series	2500HD/3500HD
Engine	6.6L Duramax LB7/6.6L Duramax LLY

📄 Download Core Return Form (PDF)