Wehrli 17-24 L5P Duramax Billet Exhaust Manifold Kit w/ Gaskets and ARP Hardware
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
WCFab's 2017-2025 L5P 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 designed to be paired with WCFab's 2" Stainless High-Flow Up Pipes (sold separately) for optimized performance. Fully compatible with vehicle emissions system, these L5P Manifolds include the necessary sensor port and EGR riser flange. 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 1800 deg F.
- Includes ARP 12PT Fasteners and washers for installation to cylinder head. Up pipe fastener kits sold separately as part WCF100199.
- 1/8 NPT ports (and optional plugs) included in driver and passenger side manifold for installation of EGT or drive pressure sensors
- Includes new gaskets for manifold to cylinder head and manifold to up pipe
- Fully TIG Welded, CNC machined billet steel exhaust manifolds
- Finished in Black Ceramic Coat rated for 2000 deg F
Shipping information
We currently ship within the United States only. Most in-stock orders ship within 1 business day, and standard delivery takes 5-10 business days depending on your location. Shipping is calculated at checkout based on destination and item weight, and a tracking number is emailed to you once your order ships.
See our FAQ for full shipping details.
Returns & warranty
Returns are accepted within 14 days of delivery on new, unused, and uninstalled items in their original packaging. A 15% restocking fee applies, and a Return Merchandise Authorization (RMA) number must be requested before shipping any return. Some items are not eligible for return, including electronics, engine internals, turbo/supercharger kits, special orders, and Sale/Clearance items.
All products are covered by the original manufacturer's warranty. For returns or warranty help, email contact@sabaku-parts.com. Full details are in our FAQ.