Embossed rubber coated steel construction. Engineered cross section. Dana engineering-approved for fit, form and function. Compatible Years: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016. 2016 GMC Sierra 3500 HD Engine: 6.0L V8; with Oval Ports; Replaces OE Part Number(s) 12593252 / 12611384;.