Flowtech Shorty Headers- Natural Finish

Flowtech 2011-2014 Mustang GT 5.0L Mild Steel 1-3/4" Shorty Header - Natural Finish

PART# 12131FLT

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Flowtech Headers are the perfect combination of performance, quality, and value. This header fits the popular 2011-14 Ford Mustang 5.0L V8 "Coyote" engine platform. This header features 1-3/4" primary tubes and a 2-3/4" collector for increased exhaust flow for increasing performance, improving throttle response and providing a broad torque curve. This header accommodates all emission control devices and reuses the factory header gaskets and hardware.


  • Heavy duty 16-gauge mild steel tubing for increased strength and durability
  • Mandrel-bent tubing provide consistent tubing diameter for smooth flow and increased exhaust velocity
  • 1-3/4” primary tube diameter for increased exhaust flow increasing performance and improving throttle response
  • OE style 2-3/4” collector connects to factory exhaust head pipe
  • TIG-welded, machined 7/16” header flange for a leak-free seal and maximum strength
  • Accommodates all factory OE components
  • Available in a raw or polished finishes
  • Headers are a must if you are using a cold air intake, cat-back exhaust system or tuner
  • Retains factory O2 sensors and catalytic converters


Application2011-2014 Mustang 5.0L
Emission Code3
Header FinishNatural
Header StyleShorty
MaterialMild Steel
Primary Tube Dia.1-3/4 inch
Product TypeHeader
Part Number12131FLT


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

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