Description:

Downstream - (Models with Square Connector Only). Compatible with or fits: (Note: 1st Design; Square Connector; Left; Position: Downstream Left; 2006 Chevy Trailblazer 5.3L V8 VIN: M FI Naturally Aspirated GAS 2006 Chevy Trailblazer 6.0L V8 VIN: H FI Naturally Aspirated GAS). Compatible with or fits: (Note: 1st Design; Square Connector; Right; Position: Downstream Right; 2006 Chevy Trailblazer 5.3L V8 VIN: M FI Naturally Aspirated GAS 2006 Chevy Trailblazer 6.0L V8 VIN: H FI Naturally Aspirated GAS). Compatible with or fits: Position: Downstream; 2002 - 2005 Chevy Trailblazer 4.2L 6 Cyl VIN: S FI Naturally Aspirated GAS. Review Description to Ensure Proper Fit.