MBRP GMCA428 3" Black Aluminized Turbo Downpipe, 2015, 2016 GM 6.6L Duramax LML

Replaces# GM8428

Carb EO # D-763-2

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 you've come to expect from MBRP.

• Richer Diesel Sound
• Greater Heat Retention
• Gains of +21HP & +24 Ft-lbs.
• 20% Greater Flow Over Stock
• Will Not Affect DPF or Urea System

This Downpipe is designed for the 2015.5+ model trucks with the 3-bolt flange style connection.