Upstream Downstream for 03-2006 Chevrolet Suburban 2500 8.1L Oxygen O2 02 Sensor

Oxygen o2 02 Sensor Downstream for 01-2002 Chevrolet Silverado 2500 HD 3500 8.1L

Upstream or Downstream For 03-06 Chevy Avalanche 2500 8.1L 02 O2 Oxygen Sensor

2pcs Upstream Downstream O2 02 Oxygen Sensor for 03-2006 GMC Yukon XL 2500 8.1L

Upstream or Downstream For 03-06 Chevy Avalanche 2500 8.1L 02 O2 Oxygen Sensor

2pcs Upstream & Downstream for 2001-02 GMC Sierra 2500 HD 8.1L O2 Oxygen Sensor

For 2003-06 Chevy Suburban 2500 8.1L O2 Oxygen 02 Sensor Upstream OR Downstream

2pcs Upstream Downstream O2 02 Oxygen Sensor for 01-2002 Chevrolet Suburban 2500