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