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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
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Description
Wehrli Custom Fab WCF100373 Billet Exhaust ManifoldsGet the Wehrli Custom Fab WCF100373 Billet Exhaust Manifolds for your Chevy GMC Silverado Sierra equipped with an L5P Duramax engine. The billet Exhaust Manifolds with EGR Riser Flange replace the restrictive factory cast parts with high strength, TIG welded high flow billet steel components designed to enhance exhaust flow, and improve turbo spool up, while lowering EGTs. These exhaust manifolds are exhaust port gasket matched and internally divided
Get the Wehrli Custom Fab WCF100373 Billet Exhaust Manifolds for your Chevy/GMC Silverado/Sierra equipped with an L5P Duramax engine. The billet Exhaust Manifolds with EGR Riser Flange replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow, and improve turbo spool up, while lowering EGTs.
These exhaust manifolds are exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads. The outlet locations allow for compatibility with OEM style up-pipes. This manifold set includes new gaskets for the exhaust manifolds to cylinder heads, EGR flange, and the manifold to up-pipe. Also included is a set of ARP 12-point fasteners for manifold to cylinder head connection (up-pipe bolts not included). Also compatible with L5D 4500/5500/6500 Medium Duty Trucks.
Features:
- Fully TIG Welded CNC Machined Billet Steel
- Black Ceramic Coat Finish Rated For 1800 Degrees
- 1/8" NPT Port (Includes Optional Plug) On Driver Side
- Direct-Fit Upgrade, No Tuning Or Modifications Required
Note: Up-pipe fasteners not included.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Easy to install
Size: 23.6 Inch, Color: White, Size: 23.6 Inch, Color: White
This product exceeded my expectations. The installation process was incredibly straightforward—even for someone with little to no experience—and the instructions were clear and easy to follow. Once installed, it feels very sturdy and secure, with no wobbling or shifting at all. You can tell it’s well-designed and made with quality materials. I also appreciated how quickly I was able to set everything up without needing any extra tools or help. Overall, it’s a reliable, user-friendly product that I would absolutely recommend to anyone looking for something dependable and easy to install. Drill is required though.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
It holds up weight
Size: 23.6 Inch, Color: White
Nice boards. I will order again
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Reviewed in the United States on April 4, 2026
★★★★★ 1
Don't buy
Size: 23.6 Inch, Color: White
The shelf is very flimsy and not sturdy at all. It feels unstable and poorly made. Definitely not worth the money, I wouldn’t recommend wasting your time or money on this product.
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Reviewed in the United States on February 22, 2026
★★★★★ 5
good product
Size: 6FT*6FT, Color: Bright Yellow, Size: 6FT*6FT, Color: Bright Yellow
work beans
sturdy and versitle
easy install
people said it bad because they are dorf hellen Kellers
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Reviewed in the United States on April 19, 2026
★★★★★ 1
Not worth it!
Size: 6FT*6FT, Color: Black
These are the terrible. They keep falling down. The bottom part doesn't stay tight so it keeps turning making it in possible to stay standing. Its the absolute worst!
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Reviewed in the United States on April 15, 2026