I. OEM Part Number
GM 12642623
GM 12633244
II.Fit For the Following
2005-2012 Chevrolet Silverado 2500 HD
2007 Chevrolet Silveado 2500 HD Classic
2005-2006 Chevrolet Silverado 3500
2007 Chevrolet Silverado 3500 Classic
2007-2012 Chevrolet Silverado 3500 HD
2005-2012 GMC Sierra 2500 HD
2007 GMC Sierra 2500 HD Classic
2005-2006 GMC Sierra 3500
2007-2012 GMC Sierra 3500 HD