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Flowmaster Direct Fit Catted Y-Pipe - 49 State Legal (05-09 V6)

AmericanMuscle no longer carries the Flowmaster Direct Fit Catted Y-Pipe - 49 State Legal (05-09 V6). Please check out 2010-2014 Mustang X-Pipes for Long Tube Headers for an updated selection.
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Features & Details

  • Improved Exhaust Sound
  • Increased Horsepower and Throttle Response
  • High Flow Ceramic Catalytic Converters
  • Conjoined Y-Pipe Assembly for a Distinctive Exhaust Growl
  • 2.25" 304 Stainless Steel Mandrel-Bent Tubular Construction
  • Bolt-On Upgrade
  • 25,000-Mile Warranty for Internal Components
  • 5-Year/ 50,000-Mile Warranty for External Casing
  • 49-State Legal
  • Fits All 2005-2009 Mustang V6 Models
Notice-Worthy Exhaust Sound. OE Mustang exhaust manifolds are restrictive to exhaust flow, making your 2005 – 2009 Mustang V6 unfamiliarly docile. With this Flowmaster Direct Fit Catted Y-Pipe, you have an increased exhaust flow, which gives your muscle whip an aggressive exhaust growl, while upgrading its performance and HP.

Enhanced Horsepower and Performance. Flowmaster's Catted Y-Pipe is not only designed to provide an enhanced exhaust sound, but also offers safer horsepower gains for a powerful thrust. Its straight through, free-flow mufflers and it Y-shape eliminate exhaust turbulence, while enhancing scavenging for robust acceleration rate.

Superior Construction. To produce quality Catted Y-Exhaust Pipes, Flowmaster utilizes premium mandrel-bent 304 Stainless Steel 2.25" diameter tube. The metal is tough to withstand high operation temperatures for increased durability. It satin chrome finish shields it against hazardous driving conditions.

Easy Installation. The meticulous craftsmanship at Flowmaster produces a direct fit replacement. Installation involves bolting, without the need for modifications. This exhaust mid-pipe performs optimally with Flowmaster LTHs.

Warranty. Flowmaster guarantees its Direct Fit Catted Y-Pipe to meet U.S quality standards. The pipe comes with a 25,000-mile warranty for internal components and a 50,000-mile/ 5-Year Warranty on internal components.

Application. The Flowmaster Direct Fit Catted Y-Pipe is machined fits all 2005-2009 Mustang V6 Models.

Fitment: 2005 2006 2007 2008 2009 Details

MPN# 2020040

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Catted Y-Pipe
  • Hardware
Installation Info
Tech Specs
Will it fit my Mustang?

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Questions & Answers (2)

2 Top Rated Questions


  • At this time, this mid-pipe is not legal for use in California.

Helpful (0)

Will this work with other longtube headers such as pacesetter or Mac? And if I convert to dual exhaust which setup will I need?

  • The Flowmaster Direct Fit Catted Y-Pipe will only work with shorty headers, but it's anticipated use is for a completely stock application. This will not work with a dual exhaust setup as well, since the dual exhaust conversion will include a X-Pipe.

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Customer Reviews (2) Write a Review

Overall Rating 5

out of 5 stars

Installation Time:Weekend

Installation Cost:$100-$250

  • Loudness / Volume 3.5 3.5
  • Exhaust Note 5 5
  • Fit & Finish 5 5
  • Bang For Your Buck 3.5 3.5

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    May 28, 2018

    Flowmaster High Flows

    The tone these cats give your stang is absolutely incredible. Startups and forceful and sometimes your treated with a glorifying crackle, at low speeds, nearly idle, you get that classic muscle car metallic rumble, from there, hitting 3k, 3.5k, the tone gets so rich in depth and volume. I haven't rolled my windows up since putting these on. Next, the power is definitely noticeable. She pulls much harder now, these cats a great for someone looking to had tone and not necessarily volume, it still is plenty loud for a daily but with our v6's this a perfect way to add a beautiful tone and power without "trying" to be a v8. Id recommend a shop if you live in the Northeast.


    Year: 2007 Submodel: V6

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    February 15, 2018

    Perfect fit for the 2005-2009 V6 Mustang!

    This is a pretty straight forward install, as there’s no welding required and you bolt it on to your stock headers! If your catalytic converters are original and old, upgrade them BEFORE they clog and overheat your headers/engine! Plus, these are high flow for better performance. If you have a dual exhaust, just cut these pipes befor the Y.


    Year: 2006 Submodel: V6

    Helpful (3)

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