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MBRP 3" Turbo Downpipe GM8427

2011-2013 Duramax LML
free shipping special - no handling fees
Fits: Chevy/GMC Duramax 6.6L LML
Years: 2011-2013
Part # GM8427
  • Greater Heat Retention
  • 20% Greater Flow Over Stock
  • Richer Diesel Sound
  • Will Not Affect Emissions (DPF or Urea System)
  • Gains of +21HP & +24 Ft-lbs.
  • Installation Instructions pdf
  • Flow Specs pdf
  • NOTE: This product CAN NOT ship to California due to CARB regulations.
install difficulty
2 Hours
2 Hours
Install Difficulty
difficulty bar
Product Type:Turbo Down
PipePipe Diameter (inch): 3

Looking to add power to your GM Duramax LML? Most look at the exhaust, intake, and programmer for horsepower gains. The factory turbo direct pipe is often overlooked. MBRP has addressed this restrictive component of the factory exhaust with their new turbo direct pipe replacement that mounts between the factory turbo and exhaust system. Featuring 16-gauge mandrel bent tubing for maximum flow & extremely durable high-temperature ceramic coating, these downpipes deepen the sound of your diesel V8 while lowering exhaust gas temperature and quickening throttle response.
dyno chart
The MBRP down pipe provides a smoother flow from the turbo resulting in lower EGT’s and increased performance. The down pipe is a relatively easy install due to the precision bends that you’ve come to expect from MBRP.
flow specs
NOTE: This product CAN NOT ship to California due to CARB regulations.
Product Description Your Cost Order
MBRP 3" Turbo Down Pipe
2011 - 2013 GM Duramax LML
Part # GM8427

Thoroughbred Diesel is a MBRP Factory Authorized Online Retailer ID#:463340391

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