2004.5-2009 Duramax GT4094VA Stage 2 Turbo Kit (773542-5001S)

The Garrett 773542-5001S GT4094VA is a Stage 2 performance turbo kit for the 2004-2009 GM 6.6L Duramax. This turbo is a significant upgrade over the factory unit, designed for enthusiasts seeking maximum performance from their engine. It features a larger compressor wheel and a variable geometry turbine (VGT) section, allowing it to produce substantially more airflow and horsepower than a Stage 1 kit. While it is a direct, drop-in replacement, its aggressive design requires a robust fuel system and custom tuning to realize its full potential, making it suitable for builds aiming for over 600hp.

Part Number: 773542-5001S

• Direct, drop-in turbocharger upgrade.
• Large 64mm inducer billet compressor wheel for maximum airflow.
• VGT technology for quick spool-up and reduced turbo lag.
• Capable of supporting over 600hp with supporting modifications.
• Significantly lowers exhaust gas temperatures (EGTs) under heavy load.

• (1) Garrett GT4094VA Turbocharger
• (1) VGT Solenoid
• (1) Installation O-ring Kit
• (1) Installation Hardware Kit

• Custom tuning is required for optimal performance and to prevent check engine lights.
• Fuel system upgrades (injectors, high-pressure pump) are highly recommended for maximum performance.
• Professional installation is required.
• This turbocharger is designed to work with stock manifolds and downpipes.