2pcs for GMC Yukon XL 2500 8.1L 2003-2006 Upstream Downstream O2 Oxygen Sensor

2pcs Upstream & Downstream Oxygen Sensor O2 for 2003-2006 GMC Yukon XL 2500 8.1L

For 03-06 GMC Yukon XL 2500 8.1L Upstream Downstream O2 02 Oxygen Sensor 2pcs

For 2001-02 GMC Yukon XL 2500 8.1L Oxygen O2 Sensor 02 Upstream+Downstream 2pcs

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

2pcs Upstream & Downstream for 2003-2006 GMC Yukon XL 2500 8.1L O2 Oxygen Sensor

2pcs O2 Oxygen Sensor Upstream Downstream Fits 2001-2002 GMC Sierra 2500 HD 8.1L

2pcs Upstream & Downstream for 2003-2006 GMC Yukon XL 2500 8.1L O2 Oxygen Sensor