A.I.R Pump is a direct fit for the following:

2004-2005 Buick Rainier
2004-2005 Chevrolet Trailblazer
2004-2005 Chevrolet Trailblazer EXT
2004-2005 GMC Envoy
2004-2005 GMC Envoy XL
2004-2005 GMC Envou XUV
2004 Oldsmobile Bravada

Genuine GM Part Number: 12574379