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MAC Dual Exhaust Conversion Kit (99-04 V6)

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

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  • Item 40048

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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

    MPN# TK3849

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    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?

      Customer Photos (73) Submit Your Photo

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        Questions & Answers (39)

        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 (5) Show 2 more answers

        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 (3) Show 4 more answers

        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 (2)

        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)

        Any HP/Torque Gains? even though it's not a complete dual exhaust, will it still have any HP/Torque gains?

        • Yes you will have some again but your better off adding a bama tuner kit or a better cold air intake and throttle body kit

        Helpful (2) Show 3 more answers
        Post Your Question
        10 More Questions
        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 1 answer
        Does this come with both pipes? 1 answer
        Does this contain an area for O2 sensors or have cat converters so that the ECU won't trigger a check engine code? 1 answer
        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

          Customer Reviews (100+) Write a Review

          Overall Rating 4.4

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$100-$250

          • Loudness / Volume 4.051282 4.1
          • Exhaust Note 4.410256 4.4
          • Fit & Finish 4.211538 4.2
          • Bang For Your Buck 4.576923 4.6



          • 1/5

            Installation Time: Shop Install

            July 27, 2019

            Mac Exhaust Very Disappointed

            Purchased this exhaust conversion in May and just got around to installing it. I am extremely dissatisfied and disappointed in the quality. The package arrived missing pieces which AM replaced . The pipes did not fit from the muffler to the tailpipes. The tailpipe is touching my differential and I had to bring it to a exhaust shop to get the axle tailpipes on. The muffler hanger was welded backwards. I could go on...but AM did send the missing clamps so I don't fault them. But overall this was a horrible experience from the manufacturer and I definitely regret my purchase. After putting so much time and money in trying to make something for for my car which was supposed to fit out of the box.

            Lissy9113

            Year: 2000 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 11, 2019

            MAC Dual Exhaust

            This exhaust system is great and easy to install. I initially installed it complete using the mufflers but i decided i wanted a deeper note. By removing the mufflers the exhaust sounded amazing. I like it because its not too loud to the point were it becomes too much and when i accelerate i can hear the exhaust really good.

            Espinoza

            Year: 1999 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            April 27, 2019

            switch over

            This exhaust switch went awesome! I do not have a lift, so was able to do it with car on jack stands. Great they way it is built and went together simple.

            DonH

            Year: 2000 Submodel: V6

            Helpful (1)

          • 5/5

            Installation Time: Afternoon

            January 24, 2019

            Mac V6 dual exhaust

            Super easy instal. Make sure you buy the hanger kit. Looks great .Sounds good. You cant beat the price.

            DaveK

            Year: 2001 Submodel: V6

            Helpful (3)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            January 22, 2019

            MAC Dual Exhaust

            Fits perfectly, nice and loud, an excellent product, would recommend.

            AnthonyG

            Year: 2004 Submodel: V6

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            December 17, 2018

            Nice

            Once I got the hangers in place, the MAC Exhaust went together just like I knew what I doing. I still need to make some ajustments once it warms up, maybe come spring. I must say the sound is great.

            RobertB

            Year: 2003 Submodel: V6

            Helpful (3)

          • 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 (4)

          • 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 (4)

          • 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 (5)

          • 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 (7)

          • 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 (6)

          • 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 (14)

          • 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 (8)

          • 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 (8)

          • 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 (8)

          • 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 (8)

          • 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 (9)

          • 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 (10)

          • 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 (10)

          • 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 (9)

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