MBRP GM8428 3" Turbo Downpipe | 15.5-16 GM 6.6L Duramax

This product cannot ship to the state of California!   Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. - Greater Heat Retention- 20% Greater Flow Over Stock-...

MBRP GMCA427 3" Turbo Downpipe | 11-15 GM 6.6L Duramax

MBRP Exhaust 3in. Turbo Down Pipe-Carb EO # D-763 Fits in place of the factory downpipe. High flowing 3" downpipe makes for lower EGT's and up to a 15hp gain. Heat coated black and heat wrapped.