Engine Cooling System Pipe O-Ring is a direct fit for the following:

2008-2009 Buick LaCrosse
2006-2007 Buick Rainier
2006-2007, 2009-2013 Cadillac CTS
2004-2012 Cadillac Escalade
2007-2012 Chevrolet Avalanche
2006 Chevrolet Avalanche 1500
2010-2013 Chevrolet Camaro
2011-2013 Chevrolet Caprice
2009-2012 Chevrolet Colorado
2005-2013 Chevrolet Corvette
2006-2013 Chevrolet Express 1500
2004-2013 Chevrolet Express 2500
2004-2013 Chevrolet Express 3500
2006-2009 Chevrolet Impala
2006-2007 Chevrolet Monte Carlo
2004-2013 Chevrolet Silverado 1500
2007 Chevrolet Silverado 1500 Classic
2005-2006 Chevrolet Silverado 1500 HD
2007 Chevrolet Silverado 1500 HD Classic
2004 Chevrolet Silverado 2500
2004-2013 Chevrolet Silverado 2500 HD
2007 Chevrolet Silverado 2500 HD Classic
2004-2006 Chevrolet Silverado 3500
2007 Chevrolet Silverado 3500 Classic
2007-2013 Chevrolet Silverado 3500 HD
2006-2012 Chevrolet Suburban 1500
2004-2013 Chevrolet Suburban 2500
2004-2012 Chevrolet Tahoe
2006-2009 Chevrolet Trailblazer
2009-2012 GMC Canyon
2006-2009 GMC Envoy
2006-2013 GMC Savana 1500
2004-2013 GMC Savana 2500
2004-2013 GMC Savana 3500
2004-2013 GMC Sierra 1500
2007 GMC Sierra 1500 Classic
2005 GMC Sierra 1500 HD
2007 GMC Sierra 1500 HD Classic
2004 GMC Sierra 2500
2004-2013 GMC Sierra 2500 HD
2007 GMC Sierra 2500 HD Classic
2004-2006 GMC Sierra 3500
2007 GMC Sierra 3500 Classic
2007-2013 GMC Sierra 3500 HD
2004-2012 GMc Yukon
2004-2013 GMC Yukon XL 1500
2004-2012 GMC Yukon XL 2500
2008-2009 Pontiac G8
2005 Pontiac Grand Prix
2005-2006 Pontiac GTO

Genuine GM Part Number: 12602541