Quick view 3" Turbo Down Pipe, Chevy/GMC 6.6L Duramax 2011 - 2015 SKU: GM8427 Compare $254.99 INSTALL INSTRUCTIONS MBRP GM8427 Instructions 2011-2015 Chev/GMC - 6.6L Duramax 3" Turbo Down Pipe Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Greater Heat... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List
