2011-2015 Duramax 3" Downpipe (GM8427)-Downpipe-MBRP-GM8427-Dirty Diesel Customs
2011-2015 Duramax 3" Downpipe (GM8427)-Downpipe-MBRP-GM8427-Dirty Diesel Customs

2011-2015 Duramax 3" Downpipe (GM8427)


Part Number: GM8427

Mfr Part Number:

Sale price$329.99 CAD

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 Year Make Engine
LML 6.6L Duramax

The MBRP GM8427 3" Downpipe helps your 2011-2015 6.6L LML breath by increasing the exhaust flow off your turbocharger. Removing the restrictions caused by your OEM downpipe - the MBRP replacement will lower your EGTs and increase performance. The install process is as simple as it gets from the precision bending that you'd expect from an MBRP kit.

Part Number: GM8427

  • Improved Heat Retention & Dissipation
  • 20% Greater Flow Over Stock
  • Gains of 20hp & 24ft-lb
  • Richer Exhaust Note
  • Will not work with a 3-bolt flange-style connection! 


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