Product Description
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
- Richer Diesel Sound
- Will not Affect Emissions (DPF system or the Urea injection system)
- Gains of +21 HP and +24 lb/ft Torque
