2005-09 Ford Mustang Flowmaster Catalytic Mid-Pipe V6 - S197 - 4.0 by Flowmaster

Mustang Flowmaster Catalytic Mid-Pipe (05-09) 4.0

Details   |  Description
Mustang Flowmaster Catalytic Mid-Pipe (05-09) 4.0

Use this Flowmaster catalytic midpipe to get more horsepower while still passing emissions tests!

Item #FLO-2020040
MPN# 2020040

Everyday Low Price: $443.37

Ships from supplier by Monday, January 23


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  • Improved Horsepower
  • Increased Exhaust Tone
  • 100% Bolt On


  • High Flow Catalytic Converters
  • Mandrel Bent Tubing
  • 2.25" Tubing

What's in the Box

  • (1) Catalytic Mid Pipe

Made in the USA

Product Description

Flowmaster Catted Midpipe
This Flowmaster catalytic mid-pipe is a great way to get more horsepower and torque while still being able to pass emissions in your 2005-2009 V6 Mustang. This Y-pipe features 2 high flow catalytic converters that meet or exceed Federal US EPA standards. Being a 100% bolt on kit, this mid pipe is a quick and easy way to free up some power and performance in your 4.0L S197.

High Quality Construction
This Mustang catted y-pipe is made from 2.25" mandrel bent tubing to easily bolt on to your factory exhaust. It features 2 stainless steel catalytic converters that meet or exceed USEPA standards and include a 25,000 mile emissions and 50,000 mile/5 year exterior casing warranty.

This midpipe is NOT legal for sale or use on any vehicle licensed or operated in the state of California. Restrictions may also apply in states that have adopted all or parts of California emissions standards.

Fits 2005-2009 Mustang V6 4.0L

Flowmaster Exhaust Warranty - Click Here

Product Reviews

Vehicle Applications

Ford Mustang - 2005 (05) - 2006 (06) - 2007 (07) - 2008 (08) - 2009 (09)

About This Brand

Flowmaster - The Exhaust Technology Company
Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's.

Through use of these dyno's, Flowmaster's engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers "to the ground."

Flowmaster also utilizes Spectrum Analyzers to fine "tune" the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmaster's dedication to quality is what makes them the exhaust industry leader for Latemodel Mustangs and SVT Lightnings!

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