Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sale or use in the state of California.
Turbo Down Pipe; 3 in. Dia.; Incl. Mounting Gasket; CARB E.O. D-763-1;
MBRP 01-04 Chev/GMC 6.6L Duramax 3in Black Turbo Down Pipe
MBRP Exhaust, Turbo Diesel Down Pipe.
3in. Turbo Down Pipe-Carb EO # D-763
MBRP Exhaust Down Pipe
Fits Early 2004 models
Exhaust Pipe
Component
Down Pipe