WCFAB's billet exhaust manifolds replace the restrictive factory cast parts with high strength, TIG welded billet steel components that are specifically designed to enhance exhaust flow resulting in quicker turbo spool, lower EGT's and an overall increase in performance. These manifolds internally divided and port matched to provide maximum flow for all cylinder heads.
These manifolds are a direct replacement and can be used with any stock or aftermarket oem length up-pipes although we recommend pairing them with the WCFAB high flow stainless up-pipes to get the most out of them.
These manifold kits come as a pair including new gaskets, 12PT ARP fasteners and assembly lube and are treated with a black ceramic coating with a rating of 1800+ degrees.
Features & Benefits:
- Billet Steel Exhaust Manifolds
- High Temp Black Ceramic Coating
- Internally Divided & Port Matched
- Increased Performance & Reduced EGT's
- Includes New Gaskets, ARP Hardware & Assembly Lube
- No Tuning Or Modifications Necessary To Install
- Fits The 2001-2016 LB7, LLY, LBZ, LMM & LML Duramax
