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Description
Wehrli 17-24 L5P Duramax Billet Exhaust Manifold Kit w/ Gaskets and ARP HardwareWCFab'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
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 |
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4.3 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
an excellent reference book
Format: Hardcover
At a time when the U.S. and Israel’s military operation against Iran has become one of the most important issues on the global agenda, this is an excellent reference book that summarizes the historical development of events and provides valuable context for better understanding what is happening today.
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Great for better understanding Iran's strategic perspectives
Format: Hardcover
The book moves through the growth of Iran's strategic history since the 1979 revolution. By the time it gets to the last 100 pages its very interesting as far as understanding Iran's perspective. Also found it chilling how foreboding many parts were in light of what is happening right now
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Great book to understand Iran's strategy in a historical context
Nasr provides a solid understanding of Iran both in contemporary and historical context. It makes the case clear what and how Iran is thinking. Reading it at the time of Us-Israel and Iran war helped make sense of the news media, which often follows shallow analysis.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Iran’s Strategic Error.
Format: Audiobook
Excellent discussion of Iran’s grand strategy in what they believe will protect their Nation as they continue as the world’s pariah. The book is well written and clearly lays out the history of Iran over the past 50-60 years and why they are implementing this strategy albeit a failed one, and the results. The Ayatollahs continue to pursue the destruction of Israel and struggle via terrorism and supporting war proxies to become the regions power, instead of pursuing economic wealth. This book describes the how’s and whys of this failed strategy. Good reading
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Reviewed in the United States on November 15, 2025
★★★★★ 5
Highly Recommend
Format: Hardcover
A must read, especially during the current circumstances, for anyone wanting to have a better understanding of the nuanced Iranian political strategy. This book not only clarifies how the current government of Iran thinks and operates but also why it does what it does. Contrary to the western narrow and wrongheaded perception of the Iranian regime as an fanatical religious theocracy, the book lays bare different approches the Iranian government takes to different problems and shows how many of those decisions are not based on religious convictions. Decisions are made for pragmatic and historical reasons and until the Western governments understand what the issues are, they will not be able to find a path forward that does not include violence, war, and mass casualties.
During these times that you have ignorant American Senators that push for war on behalf of a foreign government and don't know the most basic facts about Iran, I wish every American and European politician would read this book before uttering another word.
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Reviewed in the United States on June 21, 2025