GM8427 Exhaust 3" Turbo Down Pipe For 2011-2015 Chev/GMC Duramax 6.6L – Dynamic Performance Tuning

GM8427 Exhaust 3" Turbo Down Pipe For 2011-2015 Chev/GMC Duramax 6.6L LML

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  • $134.24
  • Regular price $302.04
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100% Brand New, Never been used.
Part Number: GM8424
Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends i.e. Maximizing Smoothest Exhaust Airflow
High Performance JDM Racing Design
TIG Welded CNC Machine Flange for Strength and Durability
Inlet/ Outlet Sizes: 3 ''OD / 3 ''OD
Piping Diameter: 3"
2011-2015 Chevy/GMC 2500/3500 6.6L Duramax Diesel
Does Not Fit 2015.5+ Model With Flange Outlet
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
Professional Installation is Highly Recommended
No Instruction Included


Package includes:

1 X Down Pipe Only
Just As pictures show


Fits for:

2011-2015 Chevy/GMC 2500/3500 6.6L Duramax Diesel
Does Not Fit 2015.5+ Model With Flange Outlet