Description

WCFab’s 2001-2016 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components. These manifolds are exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads. Outlet locations allow full compatibility with OEM style up pipes and are designed to be paired with WCFab’s 2″ Stainless High-Flow Up Pipes (sold separately) for optimized performance. Includes new gaskets, ARP 12PT fasteners, and assembly lube for easy install (up pipe fastener kits sold separately). Finished in Black Ceramic Coat rated for 2000 deg F.
Wehrli Custom Fab Exhaust Manifold Kit, Billet w/ Gaskets & Hardware, 01-16 Duramax, Blk Ceramic

Fitment:
2001 Chevrolet Silverado 2500 HD
2001 Chevrolet Silverado 3500
2001 GMC Sierra 2500 HD
2001 GMC Sierra 3500
2002 Chevrolet Silverado 2500 HD
2002 Chevrolet Silverado 3500
2002 GMC Sierra 2500 HD
2002 GMC Sierra 3500
2003 Chevrolet Silverado 2500 HD
2003 Chevrolet Silverado 3500
2003 GMC Sierra 2500 HD
2003 GMC Sierra 3500
2004 Chevrolet Silverado 2500 HD
2004 Chevrolet Silverado 3500
2004 GMC Sierra 2500 HD
2004 GMC Sierra 3500
2005 Chevrolet Silverado 2500 HD
2005 Chevrolet Silverado 3500
2005 GMC Sierra 2500 HD
2005 GMC Sierra 3500
2006 Chevrolet Silverado 2500 HD
2006 Chevrolet Silverado 3500
2006 GMC Sierra 2500 HD
2006 GMC Sierra 3500
2007 Chevrolet Silverado 2500 HD
2007 Chevrolet Silverado 2500 HD Classic
2007 Chevrolet Silverado 3500 Classic
2007 Chevrolet Silverado 3500 HD
2007 GMC Sierra 2500 HD
2007 GMC Sierra 2500 HD Classic
2007 GMC Sierra 3500 Classic
2007 GMC Sierra 3500 HD
2008 Chevrolet Silverado 2500 HD
2008 Chevrolet Silverado 3500 HD
2008 GMC Sierra 2500 HD
2008 GMC Sierra 3500 HD
2009 Chevrolet Silverado 2500 HD
2009 Chevrolet Silverado 3500 HD
2009 GMC Sierra 2500 HD
2009 GMC Sierra 3500 HD
2010 Chevrolet Silverado 2500 HD
2010 Chevrolet Silverado 3500 HD
2010 GMC Sierra 2500 HD
2010 GMC Sierra 3500 HD
2011 Chevrolet Silverado 2500 HD
2011 Chevrolet Silverado 3500 HD
2011 GMC Sierra 2500 HD
2011 GMC Sierra 3500 HD
2012 Chevrolet Silverado 2500 HD
2012 Chevrolet Silverado 3500 HD
2012 GMC Sierra 2500 HD
2012 GMC Sierra 3500 HD
2013 Chevrolet Silverado 2500 HD
2013 Chevrolet Silverado 3500 HD
2013 GMC Sierra 2500 HD
2013 GMC Sierra 3500 HD
2014 Chevrolet Silverado 2500 HD
2014 Chevrolet Silverado 3500 HD
2014 GMC Sierra 2500 HD
2014 GMC Sierra 3500 HD
2015 Chevrolet Silverado 2500 HD
2015 Chevrolet Silverado 3500 HD
2015 GMC Sierra 2500 HD
2015 GMC Sierra 3500 HD
2016 Chevrolet Silverado 2500 HD
2016 Chevrolet Silverado 3500 HD
2016 GMC Sierra 2500 HD
2016 GMC Sierra 3500 HD