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DHD 300-324 3" Stainless Tube LLY LBZ LMM Duramax Downpipe w/Heat wrap

300-324 - 8E
Best Value Full Feature Down Pipe 2004.5-2010 Duramax
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DHD Duramax Turbocharger Performance Downpipes

Get rid of that ugly restrictive downpipe and replace it with our 3" Stainless downpipe w/heat wrapping which creates better flow making "MO POWA BABY." Our downpipe provides a smooth and consistent 3" bore throughout the entire length of the pipe which equates to better CFM flow over the stock down-pipe.

Note: A few washers may be needed to shim the dipstick tube from the down pipe.


  • 3" 304 Stainless Steel Tube
  • TIG Welded, Jig Built Construction
  • Zinc Coated Flanges
  • Titanium Heat Wrap
  • Downpipe Support Tab


  • 2004.5-2010 Duramax 6.6L 

Shipping Information

  • Item Requires Shipping
  • 10.0 lbs.
  • W7.0000” x H7.0000” x L24.0000”

Customer Reviews

Comment Total Reviews (1)

  • Currently 5/5 Stars

Reviewed by: George12/09/2020 01:14PM

Product ownership: Less than 1 week

Purchased from: Dirty Hooker Diesel

Great fit, great quality and amazing price. Paired with dhd passenger up pipe.

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