WCFAB 2001-2016 Duramax Billet Exhaust Manifold Kit w/ Gaskets & ARP Hardware

PLEASE NOTE: WE RECOMMEND YOU GET THE WCAFB UP-PIPE SET (SKU WCF100590) ALONG WITH ARP UP-PIPE BOLT KIT (SKU WCF100240) TO GO WITH THIS KIT WCFab 2001-2016 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components. Outlet locations allow full compatibility with OEM style up pipes and are designed to be paired with our 2” Stainless High-Flow Up Pipes (sold separately) for optimized performance. Fully TIG Welded, CNC machined billet steel exhaust manifolds Exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads Finished in Black Ceramic Coat rated for 2000ºF  Includes new gaskets for manifold to cylinder head & manifold to up pipe Includes ARP 12PT fasteners and washers for installation to cylinder head. Up pipe fastener kits sold separately as part WCF100240. 1/8 NPT ports (and optional plugs) included in driver and passenger side manifold for installation of EGT or drive pressure sensors