2001 - 2007 Duramax LBZ/LLY/LB7

DESCRIPTION The MBRP GM8424 3" Downpipe helps your 2004.5-2010 6.6L LBZ/LBZ/LMM breathe by increasing the exhaust flow that comes off your turbocha...

 DESCRIPTION Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance....

DESCRIPTION Our high flow performance exhaust systems maximize exhaust flow so your engine keeps its cool with lower exhaust temperatures. Your rew...

 DESCRIPTION Maximize performance in your race built 2001-2007 GM Duramax 6.6L with the MBRP S6004PLM 4" PL Series Downpipe Back Exhaust System. ...