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

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.

This Part Fits:

Year	Make	Model	Submodel
2021-2025	Chevrolet	Silverado 2500 HD	Custom
2017-2025	Chevrolet	Silverado 2500 HD	High Country
2017-2025	Chevrolet	Silverado 2500 HD	LT
2017-2025	Chevrolet	Silverado 2500 HD	LTZ
2017-2025	Chevrolet	Silverado 2500 HD	WT
2024-2025	Chevrolet	Silverado 2500 HD	ZR2
2017-2025	Chevrolet	Silverado 3500 HD	High Country
2017-2025	Chevrolet	Silverado 3500 HD	LT
2017-2025	Chevrolet	Silverado 3500 HD	LTZ
2017-2025	Chevrolet	Silverado 3500 HD	WT
2020-2025	GMC	Sierra 2500 HD	AT4
2024-2025	GMC	Sierra 2500 HD	AT4X
2017-2021	GMC	Sierra 2500 HD	Base
2017-2025	GMC	Sierra 2500 HD	Denali
2024-2025	GMC	Sierra 2500 HD	Denali Ultimate
2022-2025	GMC	Sierra 2500 HD	Pro
2017-2025	GMC	Sierra 2500 HD	SLE
2017-2025	GMC	Sierra 2500 HD	SLT
2020-2025	GMC	Sierra 3500 HD	AT4
2017-2021	GMC	Sierra 3500 HD	Base
2017-2025	GMC	Sierra 3500 HD	Denali
2024-2025	GMC	Sierra 3500 HD	Denali Ultimate
2022-2025	GMC	Sierra 3500 HD	Pro
2017-2025	GMC	Sierra 3500 HD	SLE
2017-2025	GMC	Sierra 3500 HD	SLT