Flowtech Shorty Headers- Black Painted Finish

05-10 Mustang 1-5/8" 409SS Shorty Header- Black Painted Finish

PART# 12125FLT

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Flowtech Headers are the perfect combination of quality and value. These shorty style headers fit the popular 2005-2010 Ford Mustang 4.6L 3v V-8 models.


  • Mandrel-bent 409 Stainless Steel
  • Heavy duty 16-gauge tubing for increased strength and durability
  • Smooth transition, 1-5/8” diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response
  • OE style 2-1/2” ball and socket collector connects to factory exhaust head pipe with no cutting or welding
  • Premium aluminum header gaskets included
  • Headers are a must upgrade if you are using a cold air intake, cat-back exhaust system or tuner
  • Also available in a natural and polished finishes


Application2005-2010 Mustang 4.6L
Collector Diameter2-1/2 inch
Emission Code3
FinishBlack Paint
Header StyleShorty
Material409 Stainless Steel
Primary Tube Dia.1-5/8 inch
Product TypeHeader
Part Number12125FLT


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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