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Exhaust› Headers, Manifolds and Components

Wehrli

Wehrli 17-24 L5P Duramax Billet Exhaust Manifold Kit w/ Gaskets and ARP Hardware

$1,619.00 $1,570.43 Save $48.57

SKU: W005 WCF100373

In Stock
In Stock
Ships by Aug 5
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: WCF100373

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.

Wehrli Custom Fab Exhaust Manifold Kit, Billet w/ Gaskets & Hardware, 17-25 Duramax, Blk Ceramic

MIA's Description

Replaces restrictive factory cast exhaust manifolds with high-strength, TIG-welded, high-flow billet steel components. Designed to improve exhaust flow, turbo spool up, lower EGTs, and increase power/economy. Exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads. Compatible with OEM style up pipes. Includes new gaskets (manifold to cylinder head, EGR flange, manifold to up pipe) and ARP 12PT fasteners. Driver-side manifold includes a 1/8 NPT port (with optional plug) for EGT or drive pressure sensor. Black Ceramic Coat finish (rated 1800°F). No tuning required. Fully compatible with vehicle emissions systems.

Fitment

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Specifications

BrandWehrli
Part NumberW005 WCF100373

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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