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GM 6.6L Duramax L5P 17-20 OEM Length Replacement High Flow Up-Pipes

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Have Questions? 714-985-4825

50 State Legal50 States Emissions Legal (E.O. D-701-33)

GM trucks equipped with the L5P diesel are a modern marvel of engineering and design. They're a winning combination: a powerful workhorse, with low emissions, and great styling. Unfortunately, they have been outfitted with undersized, restrictive stock up-pipes.

Now you can upgrade the L5P to achieve higher-flow by bolting on PPE OEM-Length Replacement High-Flow Up-Pipes. These direct replacements have a 46% larger flow area over stock, which results in a deeper-breathing power-plant, while maintaining the mandated Federal emissions standards of stock.

The PPE OEM-Length Up-Pipes are manufactured from 11 gauge 304 stainless steel. These new Up-Pipes include the superior PPE internally-sleeved bellows, also manufactured from 304 stainless steel.

This system is engineered to take the abuse of high temperatures and high pressures, while promoting increased exhaust flow and lower EGTs. A superior product for your modern marvel.


GM Equivalent P/Ns: 12676611, 12688021


Applications2017-2020 GM 6.6L Duramax L5P  


  • 46% larger flow area over stock 
  • Manufactured from 11 gauge 304 stainless steel 
  • 304 stainless steel, internally-sleeved bellows 
  • Direct bolt-on replacement 
  • Includes 301 stainless steel gaskets 
More Information
UPC 840171209570
Weight (lbs) 12.1625
Full Dimensions (LxWxH) 18.5" x 10" x 6"
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