Fit For: 2008-2009 Buick Allure V8 5.3L Upstream (Front);Downstream (Rear) 1996-1996 Buick Century L4 2.2L Downstream (Rear) 1996-2004 Buick Century V6 3.1L Downstream (Rear) 2008-2009 Buick Lacrosse V8 5.3L Upstream (Front);Downstream (Rear) 1996-2003 Buick Lesabre V6 3.8L Downstream (Rear) 1996-2003 Buick Park Avenue V6 3.8L Downstream (Rear) 2004-2005 Buick Rainier L6 4.2L Downstream (Rear) 2006-2006 Buick Rainier V8 5.3L Downstream (Rear) 1996-1996 Buick Regal V6 3.1L Downstream (Rear) 1996-2003 Buick Regal V6 3.8L Downstream (Rear) .
