The MBRP GM8427 3" Turbo Downpipe provides a smoother flow from the turbo in your 2011-2015 GM 6.6L Duramax. Removing the restriction in the factory downpipe results in lower EGTs and increased performance. The down pipe is relatively easy to install due to the precision bends that youve come to expect from MBRP.
- Greater Heat Retention
- 20% Greater Flow Over Stock
- Richer Diesel Sound
- Will Not Affect DPF or Urea System
- Gains of +21HP & +24 Ft-lbs.
Not available for sale in the state of California Click here to read Emissions Notice.