The Garrett GT4094VA turbo kit is a Stage 2 turbocharger package for 2004.5–2009 Chevy Duramax 6.6L applications, providing a higher-capacity turbo option for that platform. It is intended as an upgrade or replacement turbo sized for the Duramax 6.6L within the stated model years, offering the flow and valve characteristics associated with the GT4094VA specification.
Garrett GT4094VA Turbo Kit - Chevy Duramax 6.6L 2004.5-2009 Stage 2 AVNT