WEHRLI CUSTOM FAB WCF100373 BILLET EXHAUST MANIFOLDS

Get the Wehrli Custom Fab WCF100373 Billet Exhaust Manifolds for your Chevy/GMC Silverado/Sierra equipped with an L5P Duramax engine. The billet Exhaust Manifolds with EGR Riser Flange replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow, and improve turbo spool up, while lowering EGTs. 

These exhaust manifolds are exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads. The outlet locations allow for compatibility with OEM style up-pipes. This manifold set includes new gaskets for the exhaust manifolds to cylinder heads, EGR flange, and the manifold to up-pipe. Also included is a set of ARP 12-point fasteners for manifold to cylinder head connection (up-pipe bolts not included). Also compatible with L5D 4500/5500/6500 Medium Duty Trucks.

• Fully TIG Welded CNC Machined Billet Steel 
• Black Ceramic Coat Finish Rated For 1800 Degrees
• 1/8" NPT Port (Includes Optional Plug) On Driver Side
• Direct-Fit Upgrade, No Tuning Or Modifications Required

Note: Up-pipe fasteners not included.