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 EGT’s and increased performance. The down pipe is relatively easy to install due to the precision bends that you’ve 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.
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