Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter Daily

MAC 1-5/8 in. Ceramic Long Tube Headers (99-00 V6)

Item 40061
Market Price $538.96 You Save 34% ($180.97)
Clearance Price


FREE Shipping

Will this fit your Vehicle?

Change Vehicle Help?
In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • Increases Horsepower and Torque
    • Long Tube Header Design
    • Free Flowing Mandrel-Bent Tubing
    • Polished Ceramic Finish
    • Fits 1999-2000 3.8L V6 Mustangs
    More Horsepower And Torque. Bolt on extra horsepower and torque that you can feel throughout the entire RPM band with a set of MAC Performance Long Tube Headers. These MAC Chrome Long Tube Headers when combined with a matching shorty Mid Pipe will improve your Mustangs exhaust flow increasing your pony's horsepower and torque.

    Ceramic Coating. These Long Tube Headers are completed in MAC's Polished Ceramic Coating that not only looks great, but reduce under hood temperatures to help increase horsepower and extend the life of the headers. Ceramic Coated headers will long out last both chrome plated and polished headers.

    High Quality Construction. Constructed from 1-5/8" mandrel bent 16 Gauge Steel tubing so there are no kinks to rob you of power, these MAC Performance Long Tube Headers feature 2-1/2" True Fit Collectors that eliminate the need for gaskets which are prone to leak and blow out. These headers are then completed in a polished ceramic finish for good looks and a durable long life.

    Application. This pair of MAC Performance Long Tube Headers are specifically designed to fit 1999-2000 Mustangs that are equipped with the 3.8L V6 engine. MAC Performance recommends using a MAC shorty Mid Pipe for the best performance gains. (see drop down option above). Technical Note. This MAC Performance product is not legal for use in emission restrictive states.

    Fitment: 1999 2000 Details

    MPN# TF6990

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Driver Side Header
    • (1) Passenger Side Header
    • (4) 7/16" Studs
    • (4) Flange Nuts
    • (12) Header Bolts
    Installation Info
    Tech Specs
    Header Specifications
    Header Type: Long Tube Finish: Ceramic
    Type Mid Pipe Required: Shorty Fitment: 1999-2000 3.8L V6 Mustangs
    Will it fit my Mustang?

      Customer Photos (5) Submit Your Photo

      View All 5 Photos

        Questions & Answers (11)

        5 Top Rated Questions

        Do I need an H pipe when replacing the manifold with these headers?

        • Either H or X-pipe will work for these headers as long as it is a shorty mid-pipe! Also with doing long tubes you will want to match the same brand mid-pipe to headers for proper fitment.

        Helpful (1)

        How Much? How Much HP & TQ will this add I already have true dual flowmaster, but stock headers at the moment.

        • Will add about 25hp and 15tq with a included mid pipe. Make sure you purchase a 'shorty' mid pipe for the longtube headers.

        Helpful (1)

        How hard are these to put on? Will I have to drop the k-member like with the 4.6?

        • These would be just as complicated and long of an install. We list this as 3 out of 3 wrenches of difficulty confirming mechanical expertise or professional installation as being required, and estimate it would take about a day.

        Helpful (0)

        Your site says these will work with all 3.8 Mustangs...manufacturer's site says the Mac LTs do not work with any year convertible... Which is correct? 2004 3.8 convertible, auto... Thanks

        • The MAC 1-5/8 in. Ceramic Long Tube Headers will have fitment issues on convertible models.

        Helpful (0)

        are these unequal length headers?

        • The MAC 1-5/8 in. Ceramic Long Tube Headers are not Unequal Length Headers. Unequal Length Headers are only an option for shorty headers.

        Helpful (0)
        Post Your Question
        6 More Questions
        Will these headers fit on a car with an automatic transmission? 1 answer
        Do they have a shorty x pipe with cats? 1 answer
        It there an X pipe for these to accommodate for the long tube headers? I would like to use these with Pypes True Dual Catted Exhaust (98-04 V6) Item 20106 MPN# SFM53. But I want the black tips that come with Pypes True Dual Off-Road Exhaust with Black Tips (98-04 V6) Item 383690 MPN# SFM55B. Can you guys make all this happen? 1 answer
        Will this Mac long tube headers and mid h pipe bolt up to the true dual Mac conversion without modifications? 1 answer
        Will these long tube headers hook up to the pypes catback true dual system without modifications? 1 answer
        2 or 4 o2 extensions 1 answer

          Customer Reviews (10) Write a Review

          Overall Rating 3.7

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$250-$500

          • Performance Gain 4.4 4.4
          • Fit 3.3 3.3

          • 1/5

            Installation Time: Afternoon

            July 12, 2019

            i had to buy another set of these

            I had bought a set of these about 7 years ago and they completely rusted out. The build quality of these are not much better, very thin internal diameter metal tubes not safe for high horsepower applications. Unfortunately, it seems even a great company like Mac believes the v6 mustang to be a joke. Really disappointed with the purchase. But there are no other options. Fitment is okay as long as you have a hammer.


            Year: 2000 Submodel: V6

            Helpful (0)

          • 4/5

            December 16, 2018

            They're cool

            To everyone struggling with the install it is so much easier to install them if you remove your valve covers, upper intake manifold, and all the little sensors around. Make sure you remove the spark plugs so you dont accidentally break one and have to remove the cylinder head.


            Year: 2000 Submodel: V6

            Helpful (3)

          • 1/5

            Installation Time: Weekend

            October 03, 2018

            Header install

            Do not buy the fit is horrible took several days just to get the passenger side on an then it was still riding on the starter,motor mount stand and the transmission pan. After a week of driving had to take them off and put the stock manifolds back on before they rubbed a hole in the transmission pan. Total waste of money!


            Year: 2000 Submodel: V6

            Helpful (4)

          • 3/5

            Installation Time: Full Day

            October 30, 2017

            Difficult installation

            Headers took forever. passenger side is insanely difficult to install, however doable. The independent ports make exact figment a pain. I spoke with a specialist on chat before ordering to ensure I had all of the parts for a successful installation but after I received the headers, as pictured, there are “air ports” on the front and Americans Muscle doesn’t include or sells the caps to close it off. Then I found the same headers on the manufacturer site for way it’s been an awesomely frustraihhting experience all together.


            Year: 1999 Submodel: V6

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            May 27, 2016

            Sounds and runs like boss

            Passenger side was difficult , it took most of the time , the drive side was pretty easy , love them , I would recommend this to any v6 that wants more HP


            Year: 1999 Submodel: V6

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            April 16, 2016

            Amazing buy for a v6!

            So my mid pipe cracked my stock headers. why not upgrade to long tubes right?! well after getting these put in along with an h pipe and a side exit exhaust, my lil v6 runs with the gt's! so much faster and meaner! A must have and the price isnt hurting your wallet! only one problem with these, i have a 2000, but my engine may be a 2001. i dont have the lines for the 2 holes on these headers. NOT O2 SENSOR HOLES, whatever it is closest to the studs on the block. i plugged those though and it works like its supposed to! (Whats my driving style only gives me one option! This is my daily, my show car and my strip car)


            Year: 2000 Submodel: V6

            Helpful (11)

          • 4/5

            Installation Time: Afternoon

            October 16, 2015

            Mac headers

            The Mac headers are good they made my car move better and sound better. I think the v6 headers sound be a little cheaper but it's still worth it.


            Year: 2000 Submodel: V6 Newburgh New York

            Helpful (7)

          • 5/5

            Installation Time: Weekend

            May 25, 2015

            Overall good.

            If you wanna change the sound of your v6 these headers are a must. Also the performance gains are well worth it. Only cons I'd give these bad boys are that the passenger side header was the hardest to install. I think they should hit the designe table one more time and adjust the bends just a little. Only because it was a pain to instal. I actually had to have a buddy pull down on the header piping to bend it to aligne up with the stud wholes on the engine. Over all I give this a 4 1/2 star rating. Just because of the fitment issue. Over all makes your stang so loud and sound like a GT at lower RPM ranges. Higher makes it sound like those v6 stange on YouTube with the off rd exhaust.


            Year: 1999 Submodel: V6 Santa Rosa CA

            Helpful (7)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            December 21, 2013

            Awesome headers!

            These make your stang sooo loud and give it a lot more room to breath. Negatives are rattles it gives te car(which can be expected in an old American car), and how careful you have to be about bottoming out... Overall is an amazing product! My exhaust set up is these headers, custom h-pipe with cats still on, and dumped super 40s. Sounds really good(and loud) an won't get ricey until around 5000 rpms


            Year: 1999 Submodel: V6 Frisco, TX, USA

            Helpful (12)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            May 18, 2013

            HUGE DIFFERENCE!

            Before I bought this, I had a dual exhaust with flowmaster 40s, and I thought that sounded pretty good. I paired these headers with the off road h-pipe, and boy was I surprised. The difference was gigantic. It sounds like a gt at idle, and stays aggressive throughout the rpms. Last but not least, it made it much louder as well. I get lots of compliments on it and gt mustangs always want to race me because they think it's a gt. I would definitely recommend this part paired with the off road h-pipe if you want a drastic change. It was well worth it even though the total price was around 1,000.


            Year: 2000 Submodel: V6 Owensboro, KY, USA

            Helpful (13)