Garrett 773540-5001S PowerMax Stage 1 Turbo for 04.5-10 GM 6.6L Duramax

Vehicle Fitment

• 2004.5-2005 Chevy Silverado 2500HD/3500HD (LLY, 6.6L V8 Duramax Turbo Diesel, 2WD/4WD)
• 2004.5-2005 GMC Sierra 2500HD/3500HD (LLY, 6.6L V8 Duramax Turbo Diesel, 2WD/4WD)
• 2006-2007 Chevy Silverado 2500HD/3500HD Classic/New Body (LBZ, 6.6L V8 Duramax Turbo Diesel, 2WD/4WD)
• 2006-2007 GMC Sierra 2500HD/3500HD Classic/New Body (LBZ, 6.6L V8 Duramax Turbo Diesel, 2WD/4WD)
• 2007.5-2010 Chevy Silverado 2500HD/3500HD (LMM, 6.6L V8 Duramax Turbo Diesel, 2WD/4WD)
• 2007.5-2010 GMC Sierra 2500HD/3500HD (LMM, 6.6L V8 Duramax Turbo Diesel, 2WD/4WD)
• Engine codes supported: LLY, LBZ, LMM
• Exclusion: Not for 2001-2004 LB7 applications.
• Exclusion: Not for 2011+ LML/L5P applications.
• Garrett lists this exact part number as a PowerMax Stage 1 turbo upgrade for 2004.5-2010 GM 6.6L Duramax applications.

Features

• Garrett PowerMax Stage 1 turbocharger upgrade
• AVNT variable nozzle turbine design for broad power and drivability
• Larger compressor trim and larger GT40 turbine wheel than stock-style baseline configuration
• Designed to increase compressor and turbine flow
• Helps reduce back pressure in performance applications
• Can help lower intake and exhaust gas temperatures in properly tuned setups
• Nine movable vanes improve turbine efficiency from launch through peak torque
• Integral electro-hydraulic actuation with proportional solenoid control
• Designed as a direct upgrade for supported Duramax platforms
• Rated by Garrett performance catalog at up to 590 HP

Specifications

• Part Number: 773540-5001S
• Brand: Garrett
• Product Line: PowerMax Stage 1
• Turbocharger Model: GT3794VA
• Application: GM 6.6L Duramax
• Horsepower Rating: Up to 590 HP
• Turbine Type: AVNT variable nozzle
• Actuation: Integral electro-hydraulic actuator with proportional solenoid
• Condition: New turbocharger
• Position: Turbocharger system

Included Components

• 1x Garrett PowerMax Stage 1 turbocharger

Product Description

The Garrett 773540-5001S PowerMax Stage 1 is a performance turbocharger upgrade for 2004.5-2010 GM 2500HD and 3500HD trucks equipped with the 6.6L Duramax diesel engine. Garrett catalogs this exact part number for LLY, LBZ, and LMM applications, making it a focused upgrade for owners who want stronger airflow capability and improved performance potential without moving to a custom universal turbo setup.

This turbo uses Garrett's patented AVNT variable nozzle turbine design with nine movable vanes, an integral electro-hydraulic actuator, and proportional solenoid control to improve response and turbine efficiency across the powerband. Garrett also notes increased compressor and turbine flow, a larger GT40 turbine wheel and vanes, and a larger compressor trim. In properly tuned applications, it can help reduce back pressure and lower intake and exhaust gas temperatures while supporting builds rated up to 590 horsepower.

This product does not change vehicle ride height, so no front or rear lift/drop height applies. Garrett's installation literature also notes that these turbo kits are intended for off-road use and emissions legality depends on local and federal regulations for modified diesel vehicles. Always confirm engine code, model year split, tuning requirements, and any supporting fuel or airflow modifications before installation.