DHD 301-101 3" 100% Stainless Mandrel Bent LB7 Duramax Downpipe California Emission

DHD Duramax Turbocharger Performance Downpipes

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. Our design features a greater offset at both bends to create approximately 1 inch greater clearance between the down-pipe and the up-pipe. This clearance allows room for high flow aftermarket exhaust manifolds & up-pipes where as most aftermarket down pipes will have to be bent, or chrimped in order to clear.

Take a look at your OEM up-pipe and notice the cross sectional changes needed to clear the downpipe and engine. More airflow means more horsepower! Our competitors dont provide this additional clearance with their downpipe so you will have to bend or crimp in order to make work. Our downpipes are all built with 100% T304 stainless steel, including all flanges. Again, this is an industry first, and a feature not available from our competitors.

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

Downpipe Fitment

300-101 Chevy/GM 2001-2004 LB7 Federal

301-101 Chevy/GM

300-102 Chevy/GM 2004.5-2010 LLY, LBZ, LMM

300-108 Chevy/GM 2011-2013 LML