EGR Valve is a direct fit for the following:

2006-2010 Chevrolet Silverado 2500 HD
2007 Chevrolet Silverado 2500 HD Classic
2006 Chevrolet Silverado 3500
2007 Chevrolet Silverado 3500 Classic
2007-2010 Chevrolet Silverado 3500 HD
2006-2010 GMC Sierra 2500 HD
2007 GMC Sierra 2500 HD Classic
2006 GMC Sierra 3500
2007 GMC Sierra 3500 Classic
2007-2010 GMC Sierra 3500 HD

Genuine GM Part Number: 98025695