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

For 2005-2007 Buick LaCrosse 3.8L Oxygen 02 o2 Sensor 2 Downstream

2pcs Upstream+Downstream for 2005-2007 Buick LaCrosse 3.8L Oxygen o2 02 Sensor

For 2008-2009 Buick LaCrosse 3.8L Oxygen O2 Sensor 02 Upstream+Downstream 2pcs

2Pcs Upstream & Downstream O2 Oxygen Sensor Fits Pontiac Grand Prix 3.8L 04-2007

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

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