Garrett Turbos 773540 5001S Powermax Gt3794Avnt Stage 1 Turbo | 2004.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features

• Stage 1 turbocharger upgrade for LLY, LBZ, and LMM Duramax engines

• Garrett GT3794VA with patented Advanced Variable Nozzle Turbine (AVNT) technology

• Nine movable vanes for optimized boost control and turbine efficiency

• Supports up to 500 horsepower

• Larger compressor wheel increases power and airflow without drivability loss

• Drop-in fitment—compatible with factory electronics, pedestal, and exhaust

• Includes turbocharger, adapter cable, and installation instructions

Unlock your Duramax’s performance potential with the Garrett PowerMax GT3794VA Stage 1 Turbocharger (773540-5001S). Engineered for 2004.5–2010 GM Silverado and Sierra 2500HD/3500HD models with the LLY, LBZ, or LMM 6.6L Duramax engine, this turbo delivers a substantial increase in airflow, boost response, and overall horsepower—supporting up to 500HP.

At the heart of this system is Garrett’s Advanced Variable Nozzle Turbine (AVNT) design, featuring nine movable vanes that adjust dynamically to enhance turbine efficiency across the entire power band. From off-idle response to peak torque, the GT3794VA delivers smoother, stronger acceleration without sacrificing drivability.

This turbo is a true bolt-on upgrade that works with your OEM mounting pedestal, factory exhaust system, and electronic controls—making it a hassle-free choice for those seeking performance gains without custom fabrication. The larger compressor wheel delivers improved boost and airflow, helping maximize the effectiveness of custom tunes or aftermarket fueling systems.

While it can serve as a direct replacement for a worn-out factory turbo, optimal performance is achieved when paired with aftermarket tuning or fueling upgrades.

Fitment:
2004.5, 2005, 2006, 2007, 2008, 2009, 2010 GM Silverado/Sierra 2500HD & 3500HD 6.6L Duramax (LLY, LBZ, LMM)

Warranty:
Covered by Garrett's standard limited warranty (manufacturer terms apply)

Fitment Notes:

• Drop-in replacement for OEM variable geometry turbos

• Tuning and upgraded fueling recommended to achieve full performance potential

• Not designed for emissions-deleted trucks or off-road-only use without additional modifications