Wehrli 01-04 Duramax LB7 Billet Exhaust Manifold & SS Up Pipes w/ Gaskets and ARP Hardware

WCFab's 2001-2004 LB7 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components. 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 paired with WCFab's 2" Stainless High-Flow Up Pipes for optimized performance. Includes new gaskets, ARP 12PT fasteners, and assembly lube for easy install. Finished in Black Ceramic Coat rated for 2000 deg F.

Manifold replaces the following GM Part Numbers: 12637647, 12624683, 97224587

Additional Information

Wehrli Custom Fab Billet Exhaust Manifold & Stainless Up Pipe Kit w/ Gaskets & Hardware, 01-04 Duramax

Part Type

Exhaust Manifold

• 1/8 NPT ports (and optional plugs) included in driver and passenger side manifold for installation of EGT or drive pressure sensors
• Finished in Black Ceramic Coat rated for 2000 deg F
• Fully TIG Welded, CNC machined billet steel exhaust manifolds
• Includes ARP 12PT Fasteners and Washers
• Includes new gaskets for manifolds & up pipes
• Made in USA

Note for Australian and European Markets

Unless otherwise stated, this product may be engineered for use in Left-Hand Drive vehicles. Steering components, pedals, shifters, linkages, wing mirrors, instrument clusters, panhard rods/traction bars, drag links, brake boosters, brake or clutch lines, accelerator cables, heater cores, some master cylinders and adjacent parts can vary between LHD and RHD configurations. In some models compenents such as windscreen wiper arms, motors and linkages could differ in their size and orientation. Items such as floor mats & dash mats may have differences in their structure around the front row (or padding in different locations). In many cases items are identical depending on the design of the vehicle and part, but may have differing mounts, lengths or bolt patterns. Carefully review the product images and details to ensure suitability for your vehicle, or contact StreetFX support if you are unsure. Returns are not accepted for special order products.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information