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Magnaflow Dual Cat-Back Exhaust (99-04 V6)

63 Reviews
Our Price


  • Item #48015
  • MPN# 15717

  • Market Price $706.99
  • You Save 9% ($64.58)
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Customer Photos
  • Adds the Look and Sound of a V8
  • Bolts Up to the Stock Factory Y Pipe
  • 2.5" Stainless Steel Tubing
  • Brightly Polished 3" Tips
  • Fits 1999-2004 V6 Mustangs
The V8 look for your V6.   Looking to convert your V6 mustang from a single to a dual exhaust, but dont want to cut and weld in piping? Well then look no further, as Magnaflow has a dual exhaust catback designed for a direct bolt on for the 1999-2004 Mustang V6!

No Cutting or Welding Required. Unlike so many other aftermarket V6 dual exhaust kits that require cutting and welding the stock Mid Pipe, the Magnaflow Dual Exhaust Cat-Back system simply bolts right up to the stock Y-pipe for a no hassle installation

Quality Stainless Steel Construction. Constructed from high quality 2.5" mandrel bent Stainless Steel tubing this Dual Cat-Back Exhaust system from Magnaflow features two aggressive straight-through mufflers and brightly polished 3" stainless tips for great Muscle Car styling.

Application. The Magnaflow Dual Exhaust Cat-Back System is specifically designed to simply bolt-on to existing stock Y-pipe on of any 1999 to 2004 3.8L or 3.9L V6 Mustang for more power and a more aggressive sound.

Note: Coupon codes cannot be applied to this product.

Technical Note: recommends changing to a '99-'04 GT rear fascia so the tips fit properly.

Fitment: 1999 2000 2001 2002 2003 2004 Details

What's in the Box
Hardware included:
  • (1) y-pipe w/ attached mufflers
  • (2) chrome tips
  • (2) tailpipes
  • (4) 1.25" x 2.5" band clamps
  • (1)Pass side mounting bracket
  • (2) bolts for pass side mounting bracket
  • (2) tailpipe hangers
  • (4) small fasteners
  • (2) long fasteners
  • (2) set screws w/ allen wrench
  • (2) rubber hangers
Installation Info
Tech Specs
Cat-Back Exhaust Specifications
Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 3"
Muffler Type: Straight-through Fitment: 1999-2004 V6 Mustangs
Will it fit my Mustang?
  • V6 - 99, 00, 01, 02, 03, 04

Most Helpful Reviews

10x Better Than Stock

This is a great add on to your existing stock catalytic converters. The sound is great and the only mods as far as engine wise I have is a Cold Air Intake and now these bad boys. Great V6 Waker Upper!! ...

Read More
Helpful (41)

awesome addition

I was skeptical when i heard the videos but all i have to say now is wow. the sound is exactly what i was looking for. the installation was not terrible but took some time. my dad and i were working ...

Read More
Helpful (21)

Overall Rating 4.9 out of 5 stars
Read All 63 Reviews

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4 Questions / 10 Answers

Ask a Question

MAGNAFLOW CAT BACK SYSTEM I have a 2001 3.8L V6 mustang convertible and want to order the above system. Is it necessary to convert the rear bumper to a GT type or will the system fit with the stock bumper? Also, how loud will the sound be inside the car as I do not want a loud drone inside the cabin.


  • Yes, this will fit without the bumper cover change to a GT cover. My brother just put one on his V6 mustang. Sounds great with a little rumble inside when your getting on it. But not bad. Sounds a lot better out the back than stock. Good Luck !!


    Good Answer (0) (0)

Show 1 more answer Answer This Question I need this answered (0) (0)

Does it have that ricey sound or is it a deep rumble through and through? I'm looking for a dual exhaust to convert my v6 and get it sounding like a v8 as much as possible. If not this, what exhaust will make it sound deep and like a V8?


  • This is a quality catback but it will make a V6 engine exhaust tone raspy, yes. Check out YouTube for audible samples of this kit. Removing factory catalytic converters and installing a set of hi-flow cats will increase power and give a deeper tone compared to stock. Getting a dual exhaust conversion kit would be best. Dual pipes with very aggressive chambered mufflers would sound perform best. My example is under user name Borr Migilicutty.


    Good Answer (0) (0)

Show 1 more answer Answer This Question I need this answered (0) (0)

is it better than flowmaster does it sound better than flowmaster ?????


  • As always sound is a matter of opion however, quality is not. That is the main difference in these too. Flowmaters sound nice but they tend to deteriorate. They have a major rust problem and the black paint tends to flake off. I would choose magnaflow. I have this kit and it still looks brand new on my daily driver after 2 and a half years of owning it.


    Good Answer (3) (0)

Show 2 more answers Question Resolved

After the fact. I bought this exhaust system about a month ago and i now want to put headers on my car. Will the stock cats be bad to have with the BBK shorty headers? Is there a pipe that will fit to the headers then to this cat back exhaust? I was thinking of getting rid of the old cats and putting new ones on or getting rid of them fully.


  • I would leave the cats or maybe put higher flow ones on. I have the same setup. Sound great and really make a difference with a tuner. If you remove the cats though you will lose a lot of backpressure which in turn will lose torque. It will sound even better with out but you must ask yourself whether you want hp or sound more.


    Good Answer (3) (0)

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Customer Reviews (63) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 3.875 3.9
  • Exhaust Note 4.6875 4.7
  • Fit & Finish 4.5625 4.6
  • Bang For Your Buck 4.125 4.1

  • 5/5

    April 26, 2010

    awesome addition

    I was skeptical when i heard the videos but all i have to say now is wow. the sound is exactly what i was looking for. the installation was not terrible but took some time. my dad and i were working off of jacks and jack stands but we got it done. you will need to cut the old cat-back to get it off, and in my case we needed to cut the two bolts holding the system on and replace them. also i found the Vaseline helped with the removal and installation of the rubber hangers. overall very impressed.


    Helpful (21) (0)

  • 5/5

    April 22, 2010

    10x Better Than Stock

    This is a great add on to your existing stock catalytic converters. The sound is great and the only mods as far as engine wise I have is a Cold Air Intake and now these bad boys. Great V6 Waker Upper!! I found these on another site for $100 cheaper, but I will continue to get all my mustang parts from the best of the best and that's AM. THIS IS A MUST HAVE IF YOU WANT MORE SOUND, BUT DON'T WANT TO SPEND BIG BUCKS!!! You can do it yourself, I have NO mechanic experience and done it by myself.


    Helpful (41) (6)

  • 5/5

    June 19, 2010

    Amazing exhaust

    I couldn't be more please with this product. My car sounds 150% better. Took about a 3 hour install with no car lift (I used ramps). Only difficult part about putting it on was getting the new pipes around the axle. Overall a 5 star product!!!


    Helpful (17) (2)

  • 5/5

    April 16, 2011

    v6 magnaflow exhaust

    love it big differance.was easy to install,only thing that could help if mufflers that connect to the Y pipe were marked up or down.great product

    rob munger

    Year: 2004 Submodel: V6

    Helpful (2) (1)

  • 5/5

    April 11, 2009

    Great Product

    This is a great exhaust system for your V6 Mustang. I just bought my 04 Mustang and then bought this system. It fit perfect on my 3.9 V6. It sounds great and I feel a little extra power. Would highly recommend taking off the wheels like everyone else says. It gives you a little extra room. Great system and I would have to recommend it to anyone looking for a cat back for a V6 3.8 or 3.9. Thanks American Muscle and Magnaflow.


    Year: 2004 Submodel: V6

    Helpful (10) (0)

  • 5/5

    March 21, 2010

    Sick Sound

    This is undoubtedly the way to go if your looking to make your v6 sound more aggressive but keep in mind if u plan for performance or to finish up the job this is not the way to go. This is only the back half of your exhaust so your exhaust will still be going from 2 pipes into a y pipe then back into 2 pipes to look and sound meaner. But do not buy this if you are going to go for true dual later...waste of money but sounds WAY better than stock.


    Helpful (3) (2)

  • 5/5

    June 13, 2009


    I just got this exhaust put on my \'02 mustang.....and it rocks! The sound is 10 times better than the stock sound and it looks pretty good too. i would still recomend getting a GT bumper that has the dual exhaust inserts in it to make it look even better. Plus American Muscle shipped it to me in 3 days. i love the product and would definitely recommend it to anyone who wants to improve the sound of their V6. Thanks American Muscle!


    Year: 2002 Submodel: V6

    Helpful (8) (2)

  • 5/5

    December 07, 2008

    MagnaFlow on 2000 V6

    I put this on my stang this summer. A lot of these reviews talk about how long it takes to remove the old system. Mine came of in seconds with a reciprocating saw. If you have access to one, use it. The tone to me does not sound like a GT, but I do have to pop the hood a LOT to convince peeps its just a v6. It sounds a lot like a GT at idle, but WOT is higher pitched. Overall, this system looks and sounds great.

    Chris Wiedner

    Year: 2000 Submodel: V6

    Helpful (4) (0)

  • 5/5

    June 05, 2011

    great v6 exhaust

    This is a great exhaust system for your v6 mustang: sounds great nice and deep, stainless steel, the tips make ur car look beastly and also something i didnt expect from the system lookn at the images the tips are cut at an angle which is great, must have product!!!!!!!! but becareful when you get it not to lose the set screws they are very small!!!!!!!!!


    Year: 2001 Submodel: V6

    Helpful (6) (2)

  • 4/5

    Installation Time: Afternoon

    December 22, 2012

    Simple dual exhaust

    Somewhat loud, good fit and nice rumle/gargle when downshifting. Expensive product, dont expect it to be loud if you have catted y-pipe & stock shortty headers. A lot easier then buying new x/h- pipe & a GT exhaust, but not as loud. Great product if you want something a little louder than stock. Buy a cold air intake along with it, helps It not sound like a v6


    Year: 2000 Submodel: V6 Bayonne, NJ, USA

    Helpful (2) (0)

  • 5/5

    August 21, 2009


    I put this on my 03 mustang and I can't believe how much better it looks and sounds. This is really amazing THANKS GUYS

    Kelli H.

    Year: 2003

    Helpful (2) (1)

  • 5/5

    February 18, 2009

    What An Amazing Improvement

    The other day me and two other friends decided to get this exhaust on my 01 v6. Being that one was a mechanic and he had a lift, it made everything really easy and from start to finish it only took about 2.5- 3 hours. The sound is amazing for a v6 and such an improvment from stock. It looks great too! Great investment!! Thanks American Muscle!


    Year: 2001 Submodel: V6

    Helpful (5) (4)

  • 5/5

    Installation Time: Less than 1 Hour

    August 02, 2013

    Magnaflow Dual Catback Exhaust

    Fitment was great, and sound was amazing. Really sounds good on a V6 mustang. Was a little hesitant but sounded great. Install time was about an hour.


    Year: 1999 Submodel: V6 Elverson, PA

    Helpful (1) (1)

  • 5/5

    July 27, 2011

    Mangaflow Catback V6 Mustang Exhaust

    Its quite easy to install which will take about 1hr and 30min or so. Make sure you check for leaks after install. So make sure the exhaust clamps are sealed and tighten and the aligment is right when you bolt on the clamps.


    Year: 2000 Submodel: V6

    Helpful (1) (1)

  • 5/5

    May 25, 2011

    magnaflow catbacks for v6

    these exhaust not only look great they sound awesome!! way better then the stock sound. if you are looking for that v8 look and that deep sound for a good price and easy installation look no further.

    joey frost

    Year: 2001 Submodel: V6

    Helpful (1) (1)

  • 5/5

    May 25, 2011

    Magnaflow dual V6

    The exhaust coudnt sound better, I can also feel more power from my engine because of the exhaust flow. Great buy and easy installation. Thanks AM


    Year: 2004 Submodel: V6

    Helpful (1) (1)

  • 5/5

    May 01, 2011

    Hands down a great addition

    Great sounding exhaust could feel the power instantly.Works great with a steeda cold air intake.When the package arrived it didnt say nothing about fitting on a 3.9 just stated it would fit on a 3.8.But srely enough it did fit on my 2004 3.9 like a charm. buy it yout pony wants you too.

    Dave M

    Year: 2004 Submodel: V6

    Helpful (1) (1)

  • 5/5

    July 02, 2010

    great exhaust

    Just finished the install and I couldn't be more happy with the look and sound of my car now, hardest part to install was the rear parts it fits really snug. Sounds the best @ high rpms.


    Helpful (1) (1)

  • 5/5

    June 01, 2010

    great product!!

    A pain in the rear (no pun intended!) to install but once it went on, the rest was easy. It looks and sounds great!!!!


    Helpful (1) (1)

  • 5/5

    August 31, 2009

    Awsome Sound

    This was a great buy easy to do ive never done one and was done in a couple hours. Sounds great at idle and acceleration it sounds awsome and is DEFINATELY WORTH IT!!!


    Helpful (1) (1)

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