Wehrli

Wehrli 17-25 L5P Duramax Billet Exhaust Manifold Kit w/ Gaskets and ARP Hardware

SKU: wcfWCF100373 UPC: WCF100373
In stock - 9 items available
$1,619.00

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

Got Questions? Feel free to email us or call us at (503) 235-1947

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.

Key Features

  • 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.

Fitment

Fits 2017-2025 Chevrolet Silverado 2500 HD / Chevrolet Silverado 3500 HD / GMC Sierra 2500 HD / GMC Sierra 3500 HD equipped with the 6.6L L5P Duramax Diesel engine.

Product Details

  • Brand: Wehrli (WCFab)
  • Manufacturer Part Number: WCF100373
  • Product Type: Exhaust Manifolds & Headers

Orders typically ship within 24–48 hours of being received, but because of vendor shipping times some orders may take longer. We ship within the United States only (48 contiguous states plus DC).

Shipping Height: 10.6

Shipping Length: 20.4

Shipping Width: 11.2
California Emissions (CARB)
Not legal for sale or use on pollution-controlled motor vehicles in California or other states that adopt California emissions standards. For off-road and competition use only.
California Proposition 65
WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.