Downstream Rear For 2005-2007 Buick LaCrosse 3.8L V6 Oxygen O2 02 Sensor 2

02 Oxygen O2 Sensor for 2005-2007 Buick Allure 3.8L After Cat Downstream

For 2005-2007 Buick LaCrosse 3.8L 2 Pcs Downstream Upstream Oxygen O2 Sensor

Downstream for 2008-2009 Buick Allure LaCrosse 3.8L Oxygen O2 02 Sensor

For 2005-2007 Buick LaCrosse 3.8L Oxygen O2 Sensor 02 Upstream+Downstream 2pcs

Downstream for 2008-2009 Buick Allure LaCrosse 3.8L Oxygen O2 02 Sensor