Upstream for 1997-2005 Buick LeSabre 3.8L V6 o2 02 Oxygen Sensor 1

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

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

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

Upstream 234-4668 Oxygen O2 Sensor for 03-15 Buick Cadillac Chevrolet Pontiac

2Pcs Oxygen Sensor O2 Upstream+Downstream For 2004-2008 Pontiac Grand Prix Buick