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MBRP Black-Coated Aluminized Steel 3.5" Down Pipe - 17-26 Chevy Silverado/GMC Sierra 2500/3500HD

Thoroughbred Sku #: MBRGM8436
Manufacturer Sku #: GM8436

Item Options:

Prop 65:
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Shipping Restrictions:
This part is NOT available to ship to the state of California.


$254.99

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Applications:

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Product Details

Product Name: MBRP Black-Coated Aluminized Steel 3.5" Down Pipe - 17-26 Chevy Silverado/GMC Sierra 2500/3500HD
Manufacturer: MBRP
Manufacture Part #: GM8436
Thoroughbred Diesel Part #: MBRGM8436
Fitment Notes: 2017-2026 Chevy Silverado/GMC Sierra 2500/3500HD

Upgrade your 2017-2026 Chevrolet/GMC Silverado/Sierra 2500HD/3500HD L5P with the MBRP® 3.5-Inch, Armor BLK Downpipe. 1-Year Warranty included.

Enhance your Chevrolet/GMC 2500HD/3500HD L5P by installing the MBRP GM8436 Down-Pipe. This direct replacement down-pipe features 3-5 inch mandrel bent tubing, has exhaust wrap pre-installed, and boasts a ceramic black-coating. This down-pipe is designed to enhance your truck's performance, as the GM8436 demonstrated up to an 11 percent increase in flow compared to stock and a weight reduction of 3lbs. Upgrade your truck today with the MBRP's GM8436 direct replacement down-pipe.

Fitment:

  • 2017-Up Chevrolet Silverado 2500HD/ 3500HD L5P Duramax 6.6L 
  • 2017-Up GMC Sierra 2500HD/ 3500HD L5P Duramax 6.6L
  • Excludes Medium Duty L5D Models 

Armor BLK Black-Coated Aluminized Steel 3.5-Inch Down-Pipe

Notes: 

  • Excludes Medium Duty L5D Models
  • Not to be sold in California

MBRP Black-Coated Aluminized Steel 3.5" Down Pipe Features:

  • Ceramic black coating
  • V-band flange to four bolt flange
  • Direct replacement
  • Up to 11 percent flow increase
  • Comes with exhaust wrap installed
  • 3lbs weight savings
  • For more on MBRP call us at 1-859-737-4966.

Reviews

  • Is there a 4" downpipe to fit a 95 dodgec3500 5.9 with a pacbrake exhaust flange (4")

    Jerry bayer | 11/19/2025

    No, you will have to modify a 4" downpipe.