Wehrli Custom Fabrication® - S300 Series Downpipe

00 reviews / Item # 378905306
$258.88 - $403.53
Manufactured - Ships in 5 to 7 days
2015 GMC Sierra Denali
Fits Following Model(s):
  • 6.6L
    This part for Racing or Off-Road use only.
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    Product Details

    Wehrli Custom Fabrication

    GMC Sierra Denali 6.6L 2015-2016, S300 Series Downpipe by Wehrli Custom Fabrication®. WCFab 3" Downpipe for S300 Frame Turbo charger mounted on a 6-7" Tall Pedestal. This downpipe is designed to mate up with the standard exhaust system front pipe v-band connection. Easy install and no need to cut the front pipe of your exhaust system.

    Fitment notes: This part for Racing or Off-Road use only.

    Wehrli Custom Fabrication


    Emissions: Racing Only
    Series: S300 Series


    • Made to ensure the highest level of quality
    • Precise engineering provides great longevity
    • Backed by reliability and integrity

    Founded in a two-truck garage circa 2010 in Sandwich, Illinois, Wehrli Custom Fabrication® specializes in high-performance diesel and custom metal fabrication. At WCFab, they take great pride in their reputation for providing the highest-quality fabricated parts and performing repairs on your Duramax, Powerstroke, & Cummins diesel trucks. Since their beginning, Wehrli Custom Fabrication has been focused on making the best products on the market. Whether you use your diesel truck for work, play, or racing, you can trust Wehrli Custom Fabrication turbo kits and custom performance parts to exceed your expectations. You can rest assured that with the purchase of any of WCFab custom fabricated, made-in-the-USA parts, you’ll receive the best quality, fitment, and performance. So, outfit your towing rig with the popular S400 Over Stock Compound Turbo Kit, or get four digit horsepower numbers – Wehrli Custom Fabrication can handle it.

    Warranty Information

    Wehrli Custom Fabrication warrants that its Products will be free from defects in material and workmanship for 3 years from the date of purchase by the Original Purchaser. This warranty does not apply to any Products that have been subjected to misuse, mishandling, misapplication, neglect (including but not limited to improper maintenance), improper installation, or alterations.

    Magnuson-Moss Warranty Act:
    Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

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