SOLD Magnaflow 16399 Performance X-pipe 2011-2014 Mustang 5.0 - Mint - Nearly New

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M J Meyer

New Member
Sep 29, 2013
Collegeville, Pennsylvania
THIS SYSTEM REGULARLY SELLS AT OVER $900 NEW.....I will sell for $500 + shipping.

Stainless steel construction - 3" mandrel bent tubing - dual hi-flow off-road cats. Removed from my 2011 Mustang GT, was used for less than 250 miles prior to changing back to stock system. It provides a very nice deep-throated sound with minimal back-pressure.

MFG Product Description......

The Magnaflow 16399 is a Direct-Fit Stainless Steel, Full 3" Mandrel Catalytic Converter System for the Ford Mustang 5.0 and is a direct bolt-on to provide years of exhaust performance.

The Magnaflow 16399 provides OEM fit for the following applications:

2011 Ford Mustang 5.0L
2012 Ford Mustang 5.0L
2013 Ford Mustang 5.0L
2014 Ford Mustang 5.0L

This system is dyno tested and proven to make power with performance gains in both Horsepower And Torque. They are tuned to give a great sound. The Magnaflow 16399 Direct-Fit Catalytic Converter is easy to install requiring few if any modifications and is designed to bolt directly on. The system will contain all parts needed for a factory-type install.

  • AIR Tube - No
  • California Legal - No
  • Converter Case Material - Stainless steel
  • Converter Inlet Attachment - Stock flange
  • Converter Outlet Attachment - Stock flange
  • Converter Substrate Material - Ceramic honeycomb
  • Heat Shield - No
  • Inlet Diameter (in) - 3.000 in.
  • Inlet Quantity - Two
  • Notes - Not legal for street use.
  • Outlet Diameter (in) - 3.000 in.
  • Outlet Quantity - Two


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