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

For 2004-2005 Pontiac Bonneville 3.8L Oxygen o2 Sensor Upstream Downstream 2pcs

For 2005-2007 Buick LaCrosse 3.8L 3800CC 2Pcs Up&Downstream Oxygen O2 Sensor

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

2X Oxygen Sensor O2 02 Upstream+Downstream For 2004-2007 Pontiac Grand Prix 3.8L

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

2pcs for Buick Lucerne 04-2008 3.8L 1 Upstream & 1 Downstream Oxygen Sensor O2

02 Oxygen O2 Sensor for 2008-09 Buick LaCrosse 3.8L Upstream and Downstream 2pcs