For 04-05 Buick LeSabre Impala 3.8L O2 Oxygen Sensor 2pcs Upstream+Downstream

02 Oxygen O2 Sensor for 04-2005 Chevy Impala 3.8L Upstream and Downstream 2pcs

For 2004-05 Buick LeSabre 3.8L Upstream and Downstream O2 02 Oxygen Sensor 2pcs

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

?2pcs Upstream & Downstream For 04-2007 Pontiac Grand Prix 3.8L O2 Oxygen Sensor

02 Oxygen O2 Sensor for 04-2005 Chevy Impala 3.8L Upstream and Downstream 2pcs

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