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MAC Dual Exhaust Conversion Kit (99-04 V6)

Market Price $512.97 You Save 12% ($59.02)
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$453.95

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  • Item 40048
  • MPN# TK3849

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    Features, Video & Details

    • Adds the Look and Sound of a V8
    • Bolts Up to the Stock Factory Y Pipe
    • 2.5" Aluminized Steel Tubing
    • 3" Polished Stainless Steel Tips
    • "Flow Path" Chambered Mufflers
    • Fits 1999-2004 V6 Mustangs

    Review & Installation Video

    Review & Install Video

    V8 Look And Sound. If you're looking to give your V6 Pony the dual exhaust look and aggressive sound of a V8, look no further than the MAC Dual Exhaust Conversion Kit from AmericanMuscle. 

    Flow Path Mufflers. MAC Flow Path Chambered Mufflers feature a patented multi passage design, following Helmholtz's Theory of Tone, to produce a muffler that effectively flows exiting exhaust gases all while maintaining a desirable tone. With no packing that can burn out, Flow Path Mufflers will sound the same mile after mile, year after year.

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

    High Quality Construction. Mandrel bent from durable 2.5" aluminized Steel tubing for strength and corrosion resistance, this MAC Performance Dual Cat-Back features two "Flow Path" chambered mufflers with massive 3" diameter polished stainless steel tips for classic muscle car sound and looks.

    Application. The MAC Performance Dual Exhaust Cat-Back System is designed as a direct bolt-on to the existing factory Y-pipe on any 1999 to 2004 3.8L or 3.9L V6 Mustang for more power and a more aggressive sound.

    Technical Note. When buying a dual cat-back exhaust kit for your 1999-2004 V6 Mustang, you will need to select the "Exhaust Hanger Kit" from the drop down option menu above to properly install your new exhaust.

    Installation Note: AmericanMuscle recommends changing to a 1999-2004 GT rear fascia so the tips fit properly.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Y-Pipe
    • (2) Muffler Assemblies
    • (2) Tail pipes
    • (2) Exhaust Tips
    • (2) Clamps
    • (2) Hangers
    • (8) Threaded Studs
    • (8) Nuts
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: Aluminized Steel Tip Material : Polished Stainless Steel
    Piping Size: 2.5" Tip Size: 3"
    Muffler Type: Chambered Fitment: 1999-2004 V6 Mustangs
    Will it fit my Mustang?

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    Questions & Answers (37)

    5 Top Rated Questions

    Does this include hangers for the right side?

    • Judging from what I have read and understand about the MAC Conversion Kit the short answer is no. You will need to purchase a hangar kit to ensure proper installment. Pypes Hangar Kit seems to work fine and is not expensive, most exhaust shops will tell you when converting to a true dual exhaust, a hangar kit is essential if you want to actually have that dual exhaust.

    Helpful (4) Show 2 more answers

    Is this California CARB (smog) legal? Do they have an identification number tag if so?

    • This catback does not alter or move the location of the catalytic converter and will not affect emissions. The exhaust is legal for the use in California and states that have adopted their emission standards, however, it does not have a CARB OE number as it does not alter emissions.

    Helpful (2)

    I have a 2000 v6 3.8L mustang. How labor intensive is putting in a whole new exhast? With my mustang just having one exhast running straight back would everything line up ok going all the way back if i were to buy the MAC duel Echast Conversion Kit? i just want to make sure im buying the right one! Thanks!

    • Yes it would I literally just got it put on today and it took my shop person 2 hours to do it looks and sounds amazing the exhaust lines up even on both sides. You have to buy the pypes hanger kit from americanmuscle along with the mac kit to have all of the parts needed. I also recommend getting a cold air intake to make it sound to its full potential. How this helped!!!

    Helpful (2) Show 4 more answers

    If I'm running a flowmaster on my single exhaust v6 and got rid of cadilac converter would this installation be any trouble and my car sounds decent for a single exhaust so would this installation take away my flow master, I already have on and tune down my sound? Idk school me

    • The MAC Dual Exhaust Conversion Kit will replace the system you have now. The kit should add to your sound with the added muffler and piping bringing in more flow.

    Helpful (1)

    Hi! Do i really need the gt fascia for the rear of the car to make this exhaust fit properly???

    • You would not need the GT rear bumper for this exhaust no. However with out the GT bumper, you will need to cut your factory bumper to allow the second tail pipe to clear the bumper.

    Helpful (1)
    Post Your Question
    10 More Questions
    Any HP/Torque Gains? even though it's not a complete dual exhaust, will it still have any HP/Torque gains? 4 answers
    I already added a SR performance in the wheel well cold air intake. Other than looks sound will this add any additional HP? 1 answer
    I noticed in the video that the pipes come really close to the rear tires. Will this kit fit if I have 275/40/R17s on the rear? 1 answer
    with this set up will i be able to still attach the catalytic converter from the stock pipes? 1 answer
    Is it possible to upgrade this to a true dual system by replacing the y pipe included in this kit with the Pypes 2.5 in. Stainless Steel Replacement Flow Tube Kit, and installing a Pypes off road x-pipe to my BBK Shorty Headers? I’m not sure if it would not line up or fit correctly 1 answer
    Will this product be able to be put on a 96 mustang? 1 answer
    Can I put 'Pypes M-80 Center/Center Bullet Style Muffler - 2.5 in.' on this if I buy it? 1 answer
    Would the MAC long tubes and shorty mid pipe bolt up to this product? 1 answer
    I purchased the hanger kit with this product. The metal pole keeps sliding out of the exhaust ring on top and won't stay in place and makes my exhaust hang low on one side. How do I fix this? 1 answer
    Would this exhaust work(FIT) with the SLP Loudmouth Resonators? I was thinking about getting these and changing the mufflers from the Mac to the SLP Loudmouth Resonators. 1 answer

    People Who Bought This Item Also Bought

    Customer Reviews (100+) Write a Review

    Overall Rating 4.4

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Loudness / Volume 4.033113 4.0
    • Exhaust Note 4.403974 4.4
    • Fit & Finish 4.185431 4.2
    • Bang For Your Buck 4.562914 4.6



    • 5/5

      Installation Time: Afternoon

      August 30, 2018

      Perfect for the price

      After about a 2 and 1/2 hour install and a little bit of adjusting , it was a fairly easy job and sounds great for the price.

      PrestonS

      Year: 2003 Submodel: V6

      Helpful (2)

    • 3/5

      Installation Time: Afternoon

      August 25, 2018

      Nice exhaust note

      This exhaust system sounds nice. It gave my V6 a nice throaty exhaust note and looks nice too. The only problem I think they should change is where the tips connect to the tubing its seems the tubing on the passenger side needs a slight bend and a bit longer tubing. It doesn't go straight like the driver side does. The passenger side has a slight angle to it, I had the fight it to make it straight but just had barely enough tubing to connect the tip. Other than that it was easy and it says to have someone help you but I was able to do it by myself no problem.

      IanH

      Year: 2003 Submodel: V6

      Helpful (2)

    • 5/5

      August 01, 2018

      MAC Dual Exhaust

      Very easy to install and fit very nice into the area under the car were they were suppose to

      JohnC

      Year: 2001 Submodel: V6

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      July 04, 2018

      Mac Dual Exhaust is great I love the product.

      I love the product, the Mac Dual Exhaust is great and l would recommend that people on a budget should get it. The note sounds awesome.

      MitchellA

      Year: 2002 Submodel: V6

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      June 28, 2018

      Great Kit

      Mellow Sound. Very Easy To Install. Must Use The Hanger Kit.Looks Great.

      Ewol

      Year: 1999 Submodel: V6

      Helpful (4)

    • 2/5

      Installation Time: Afternoon

      May 21, 2018

      Dont fit well

      The y pipe wont reach the passenger side muffler, is a tight fit on that side hiting the car frame and it rattles

      YerandyB

      Year: 2004 Submodel: V6

      Helpful (10)

    • 5/5

      Installation Time: Afternoon

      May 08, 2018

      Dual conversion

      The mac dual exhaust is a great way to get a great sound for the v6 mustang

      ChristopherG

      Year: 1999 Submodel: V6

      Helpful (6)

    • 5/5

      Installation Time: Less than 1 Hour

      April 25, 2018

      great product.....

      fast install....shop took about 1hr. looks great...great replacement from single exhaust ...

      RavelL

      Year: 2003 Submodel: V6

      Helpful (6)

    • 4/5

      Installation Time: Afternoon

      April 25, 2018

      MAC dual exhaust conversion

      This exhaust sounds really great, nice deep growl but not super loud and no rice sound. Installation I had done by a family mechanic took about two and a half hours. It does take some time to get everything adjusted so that the pipes are not rubbing against the axle or frame. I will say the exhaust started to sound better the more I drove my car overall it was definitely worth it if you want your v6 to sound good without spending a ton of money.

      AlexanderS

      Year: 2004 Submodel: V6

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      April 22, 2018

      Love my new exhaust

      Well built sounds great looks great also install took about 4 Hours

      JohnM

      Year: 1999 Submodel: V6

      Helpful (6)

    • 4/5

      Installation Time: Afternoon

      April 18, 2018

      Duel exhaust conversion

      The system I purchased was supposed to be complete with everything you need for the conversion. It did include all of the pipes needed, however adding another muffler it required the hanger for it which was not in the kit as well as the two hangers needed for both tailpipes. I also was surprised there were no instructions for the installationwhich would have helped. The mufflers did not fit with the origional rubber insulators so you have to improvise. All in all it took several hours but turned out to be a good system, the sound is mellow and isn't loud like the system on 5.0 V 8 .

      MichaelM

      Year: 2002 Submodel: V6

      Helpful (7)

    • 4/5

      Installation Time: Afternoon

      April 14, 2018

      MAC Dual Exhaust Conversion Kit

      The exhaust conversion kit is worth the money, loudness is alright not too loud but not quiet either, does give your mustang a mean look

      JuniorS

      Year: 2000 Submodel: V6

      Helpful (6)

    • 4/5

      Installation Time: Afternoon

      April 08, 2018

      Love Love

      Love it! Sounds great! Took me 4 hours because I couldn’t get the stock one off. But I had to bring it to the shop a few time because it’s been hitting the frame. But other than that, it’s worth it.

      Lilredv6

      Year: 2000 Submodel: V6

      Helpful (7)

    • 5/5

      Installation Time: Afternoon

      March 26, 2018

      2000 Mustang

      Great product . My son and I done this install in a couple hrs, we were both impressed with the new look and sound

      Milbern77

      Year: 2000 Submodel: V6

      Helpful (6)

    • 5/5

      Installation Time: Less than 1 Hour

      March 24, 2018

      Awesome and super easy to install

      I put this dual exhaust kit on my 03 3.6 mustang and it does amazing do reccomend a high flow cat kit it makes it sound meaner but no noticeable power diffrence saving now for the high flow kit excited! Less than an hour install time if you have access to a lift youll breeze through it

      SeanB

      Year: 2003 Submodel: V6

      Helpful (7)

    • 3/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      March 20, 2018

      If agressive is what you want get something else.

      Its nice growl when reving the engine. But when your moving you just cannot tell that it is actually making a good sound just like the stock exhaust. It does have performance increase Ofcourse acceleration in the lower rpms and the high are pretty much the same but it has breathability so it gains that power. Shop charged really high just to do this and also new spark plugs.

      Will

      Year: 2004 Submodel: V6

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      February 23, 2018

      Nice!

      For the price it's worth,it's a pretty aggressive little catback!Not crazy loud but also far from stock which is great.As stated by others,need the hanger kit!Also,mine didn't come with nuts,just the bolts which I found irritating but wasn't too big a deal,bought some at Home Depot.In love with this combo I have with the CAI!Definitely would recommend it!

      BernardoM

      Year: 1999 Submodel: V6

      Helpful (8)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      February 17, 2018

      Honest Review

      Shipping was amazing we all know that about AM but what about the product? First and foremost the pypes hanging kit available here is a MUST ended up taking this to my local mechanic to install (much easier on a lift) and as others have stated it would have been much more expensive and basically not doable without the pypes kit. 100 bucks and an hour later and no real issue besides some clearance concerns that easily were adjusted. Sounds great, looks great and my mechanic who is a complete mustang fanboy LOVED this kit, had actually confused it with a Flowmaster setup at first and actually after it was all said and done commented that this was actually likely a better overall product because of the materials. BUY THIS KIT for your mustang you wont regret it. Total cost for me was a hair over 500 installed cant beat it.

      DarrylS

      Year: 2004 Submodel: V6

      Helpful (8)

    • 5/5

      Installation Time: Afternoon

      January 02, 2018

      Very good and I’m impressed

      When I ordered the exhaust one of the 2.5” down tube was missing so I called AM the sent the down tube 2 and a half weeks later that really got me upset so they decided to send me 2 shirts and sticker. But overall the exhaust is great had a shaking noise but I adjusted the brackets and it sounded excellent.

      HasaniM

      Year: 2003 Submodel: V6

      Helpful (7)

    • 5/5

      Installation Time: Afternoon

      December 15, 2017

      WOW!!

      First of all I love the performance and sound out of this!! And not only does it sound good it was an easy install. Me and my grandpa did it in about 2 hours and we’ve never done anything like that before. And the shipping was great! Highly recommend

      CarterD

      Year: 1999 Submodel: V6

      Helpful (8)

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