Description
WCFab 2001-2016 Duramax Billet Exhaust Manifolds WCF100363
Fits: 2001-2016 Chevy/GMC 2500HD/3500HD Duramax
WCFab’s 2001-2016 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow characteristics, improving turbo spool up, lowering EGTs and increasing power and economy. 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 1800ºF.
No tuning required.
Compatible with LB7, LLY, LBZ, LMM, and LML engines.
Replaces the following GM Part Numbers: 12637647, 12624683, 97224587
Lead time (per manufacturer): In Stock. Ships in 3-5 business days.
Wehrli Custom Fabrication (WCFab) — USA made. Part number: WCF100363.
California and Emissions Notice
This product is not legal for sale or use in California, or on any pollution-controlled motor vehicle where state or local law prohibits it. It does not have a California Air Resources Board (CARB) Executive Order. You are responsible for checking and following the emissions laws in your state before you buy and install it. Questions? Call us at 479-799-3953.
