Air Filter is a direct fit for the following:

2004-2007 Buick Rainier
2005 Chevrolet Cobalt
2003-2004 Chevrolet SSR
2002-2009 Chevrolet Trailblazer
2002-2006 Chevrolet Trailblazer EXT
2002-2009 GMC Envoy
2002-2006 GMC Envoy XL
2004-2005 GMC Envoy XUV
2002-2004 Oldsmobile Bravada
2004-2007 Saturn Ion

Genuine GM Part Number: 19239713