Replace the restrictive crushed factory down pipe and SCR on your 2017-2018 L5p Duramax with this full 3 1/2″ Down Pipe. Connects to the factory turbo outlet flange and connects to any aftermarket Exhaust system front pipe with the 4 bolt style flange. Comes with Black Ceramic Coating and Heat wrapped.
If you’re Installing an Exhaust system on your L5P we highly recommend installing the Down pipe as the SCR behind the turbo will plug up and cause drivability issues. Turbo removal is required for SCR removal & down pipe installation. Turbo removal requires most of the EGR system to be removed, so it makes sense to do the EGR Fix Kit at the same time as well. The EGR Kit comes with all necessary GM Gaskets for turbo re-install.
Down Pipe does not include bungs for sensors; For Off Road Competition Use Only!