mbrp 15-16 chevy/gmc 6.6l duramax 3in down pipe (for 3 bolt flange style connection) gmca428

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.