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MAC Chrome Long Tube Headers (96-04 GT)

16 Reviews
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  • Item #40012
  • MPN# TF9625

  • Market Price $489.99
  • You Save 9% ($45.00)
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  • Increases of Up to 16 RWHP
  • Long Tube Header Design
  • Free Flowing Mandrel-Bent Tubing
  • Bright Chrome Finish
  • For Use with Manual and Automatic Transmissions
  • Fits 1996-2004 GT and Bullitt Mustangs
More Horsepower And Torque. Replace those restrictive stock manifolds with a set of MAC Long Tube Headers to improve your mustangs exhaust flow and increase your Pony's horsepower and torque. Increases of up to 16 RWHP have been seen when installed with a matching MAC shorty Mid Pipe (see drop down option above).

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 bright chrome finish for good looks and a durable long life.

Recommended Upgrade. To realize the full power potential that these Long Tube Headers have to offer, AmericanMuscle recommends a custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

Application. These long tube headers are designed to fit the 1996-2004 4.6L 2V Mustangs with either a 5 speed manual or automatic transmission, including the GT and Bullitt models. MAC Performance recommends using a MAC shorty Mid Pipe for the best performance gains.

Technical Note. This MAC Performance product is not legal for use in emission restrictive states.

Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
Hardware included:
  • (1) Driver Side Header
  • (1) Passenger Side Header
  • (16) Header Bolts
  • (4) 7/16" Steel Studs
  • (4) 7/16" Locking Flange Nuts
Installation Info
Tech Specs
Header Specifications
Header Type: Long Tube Finish : Chrome
Type Mid Pipe Required: Shorty Fitment: 1996-2004 4.6 GT and Bullitt
Will it fit my Mustang?
  • Bullitt - 01
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Most Helpful Reviews

Love it

Sounds fantastic espially paired with some good mufflers. Looks great from under the hood and under the car. Only problem is the pain it is to get into place. Be prepared for a project. But the end result ...

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Helpful (1)

love the headers!!!!

I love these long tubes. Great power gain easy install and look great. The only problem I had was that they arrived a little dinged up but who cares they are going to get dinged up eventually anyway.

Helpful (5)

Overall Rating 4.6 out of 5 stars
Read All 16 Reviews

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14 Questions / 14 Answers

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fitment issues with automatic trans? i have seen on some of the forums that people are having fitment issues with these headers on automatic transmissions. is this a new revision of the header? because i want to buy these but i don't want to drive down to the shop 30 minutes away to find out they won't fit. also, will there be any ground clearance issues if i pick these headers up with some H&R SS springs?


  • According to MAC, these will fit both the manual and automatic transmissions with out any problems. We've also heard nothing but positive feedback from our customers in regards to these long tubes properly fitting their automatic transmissions!


    Good Answer (3) (0)

Show 1 more answer Question Resolved

Can I only use the Mac pro-chamber with this? Or can I use any brand of shorty x-pipe?


  • When installing Long Tube Headers, you want to stick with the same brand shorty mid-pipe as LTH for the best fit. The MAC pro- chamber would be a perfect match to these Long Tubes. You may be able to mate these MAC LT Headers with another brand mid-pipe, but there would most likely be some modifications needed. Hope this helps!


    Good Answer (1) (0)

Show 2 more answers Question Resolved

will i need o2 sensor extensions for these headers on my 1998 gt? i have read mixed reviews some say you do some say you dont.


  • Yes you will.


    Good Answer (2) (0)

Show 4 more answers Question Resolved

Will these fit my 2003 GT Convertible? I know the convertibles have extra braces underneath. Will that be a problem?


  • I put them on my 02 Convertible. Yes they fit. Have a shop install, as there is extra bracing that needs to be removed, then reinstalled to get them in. I used Mad Hatter in Tampa, and they charged me @$250 for the install (including) the MAC H style pipe. Took them 1 day and a half.


    Good Answer (0) (0)

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Will these fit my 03 GT Convertible ? Long tube headers will be my first mod to my 03 Mustang GT convertible. What headers would best fit my car? Also, what catted mid pipe should I install along with it? And will I need to add a tuner?


  • Yes, they will fit your 03 GT Convertible. I installed these exact same headers on my 03 GT Convertible Automatic just yesterday. You will need a pair of 02 extensions and a lot of patience. I installed them myself with a help from a friend and they are a pain in the rear. I had to use a pry bar to get some holes aligned and the egr to reach. But after 3 hours i had it installed. Also, removing the old bolts was a pain since i had 2 break in the block. Lucky for me my friend was an expert at removing them. As for which mid pipe, it is highly recommended you use matching mid pipes. So if your going with mac headers, you go with mac mid pipes. I don't have any experience with mix and matching brands but for myself i went with the mac mid pipe. A tuner is not needed, you can still drive it around until you decide too get one but you wont achieve the full potential of you mod without one. Hope this helps!


    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

Gaskets Do these come with new header gaskets? if so are they durable or junk?


  • No they don't. These MAC Long Tube Headers feature 2-1/2" True Fit Collectors that eliminate the need for gaskets.


    Good Answer (1) (1)

Question Resolved

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Customer Reviews (16) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Weekend

Installation Cost:0-$100

  • Performance Gain 4.428571 4.4
  • Fit 4.428571 4.4

  • 4/5

    Installation Time: Full Day

    April 12, 2016

    Love it

    Sounds fantastic espially paired with some good mufflers. Looks great from under the hood and under the car. Only problem is the pain it is to get into place. Be prepared for a project. But the end result is definitly worth it.


    Year: 2001 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    January 24, 2013

    love the headers!!!!

    I love these long tubes. Great power gain easy install and look great. The only problem I had was that they arrived a little dinged up but who cares they are going to get dinged up eventually anyway.


    Year: 2004 Submodel: GT pensacola, fl

    Helpful (5) (0)

  • 5/5

    Installation Time: Full Day

    September 10, 2011

    Love the sound

    Once I had the LTs installed I was loving the sound it put out it was the perfect exhaust sound I was looking for


    Year: 2001 Submodel: GT HOUSTON TX

    Helpful (5) (1)

  • 4/5

    Installation Time: Weekend

    August 01, 2013

    Good headers ... DROP THE CROOSSMEMBER

    Good headers but if I had to do it over again I would drop the crossmember and it will cut down on the install time drastically it can be done in one full day of non stop working


    Year: 2001 Submodel: Bullitt

    Helpful (3) (0)

  • 5/5

    Installation Time: Full Day

    November 30, 2011

    Great LT headers for the money

    These headers are hard to beat for the money. I love the tone and power it makes with the rest of my exhaust (MAC O/R h-pipe, Flowmaster catback). I was thinking of going with BBK LTs but after hearing horror stories at first I was hesitant, but it didn't really matter since I had an Automatic I had to get the Mac LTs. Don't let anyone tell you shorty headers give you the same power as LTs its hogwash, get any kind of LTs over shorties anyday you will be happy, I know I am.


    Year: 1998 Submodel: GT Georgia

    Helpful (3) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    November 29, 2012

    MAC LT Headers are BEAST!

    I couldn't believe the gains these headers made on my 02 gt. Huge difference in throttle response and overall performance. Absolutely love them! Not to mention the deep raspy tone that turns heads. Fortunate to have friends at RUSH Automotive in Austin who installed the headers. In addition, they built and installed a custom off road X pipe set-up..headers to chrome tips. Couldn't be more pleased with the MAC headers. Feels and drives like a different car. Big props to American Muscle for quick delivery and for offering such great products at a great price. One thing - you need a branch in Austin, TX! Thanks!


    Year: 2002 Submodel: GT Round Rock, TX

    Helpful (2) (0)

  • 5/5

    Installation Time: Full Day

    January 17, 2013

    Awesome Value!

    In spite of what so many others say, you CAN do this install by your self, in your garage, with common hand tools. I did min alone and it was fairly simple. If you take your time, (about 8-10 hrs) it's not that difficult. Utilize patients and common sense. The fit was excellent, and the finish was decent. The sound improvement was awesome and the mid-high RPM power gain was the best part! Would definitely buy again! As always, AM's shipping and customer service continues to be the best in the business.


    Year: 1998 Submodel: GT Moore, OK, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    April 19, 2012

    Sweet Headers!!!

    Do yourself a huge favor and don't even bother trying to install these things on your own!! Shop recommended!!! The difference I could hear from my stock manifold and stock h-pipe is night and day! With these, MAC O/R Prochamber and Borla Cat-back exhaust you'll get a exhaust note that will seperate you from the rest of the stangs out there! Reminds me of an old Hot Rod!!! Won't be dissapointed with these headers!


    Year: 2003 Submodel: GT Fort Riley, Fort Riley North, KS 66514, USA

    Helpful (2) (1)

  • 5/5

    Installation Time: Shop Install

    March 31, 2012

    Amazing sound Great Gains

    I really can't judge the performance of this product honestly by itself, because it was put on with a new motor and whole host of other bolt ons, but after speaking with a Mustang Magic top tier tech, he told me that these pypes are his recommendation because of their price and the fact that on the dyno the same car with headers like BBK which are almost twice the price may only give 1-2 more HP and thats including the fact that factory motor tolerances can be as much as +/-10% HP, the sound of these combined with my MAC pro-chamber Xpipe and existing SLP Loudmouth2 catback system is amazing.


    Year: 1999 Submodel: GT West Islip, NY

    Helpful (2) (1)

  • 5/5

    Installation Time: Full Day

    March 23, 2012

    Smart Engineering in the Tightest places

    I installed the MAC's Headers onto the engine and then installed the engine into the car. The steering shaft fits between the inboard and outboard set of headers and fell through the opening as the headers went by the steering location. There is a good inch of clearance all around the steering shaft, without the restrictions imposed on the competitors tubes such as square indentations that still rub the steering. The pipes flow through the open space in the car and look as though they were constructed on the car. A Great Value and they sound as good as they fit.


    Year: 2000 Submodel: GT Westminster Md.

    Helpful (1) (0)

  • 4/5

    Installation Time: Weekend

    March 23, 2012

    Decent headers for the money

    They were a pain to install in the driveway, I would recommend letting a shop install them as a lift would have made it easier. They sound great and on my 96GT they definitly helped, as that engine is already behind the 8-ball. If you have the money ceramic coating would be the way to go, underhood temps are hot, to say the least. But mine is a weekend warrior car, so it doesn't bother me. Definitly get a toon ASAP to get the most out of them.


    Year: 1996 Submodel: GT Tampa, FL

    Helpful (2) (1)

  • 3/5

    September 13, 2016

    not sure what to say

    they are a very tight fit... i dont know if being a convertible has any bearing on that, however I was going to install them myself but couldn't jack my engine up high enough or find the time to finish the job. So I took it to a shop, and after having more than half of the work done on their end, they found a way to charge me over $500 for labor after I told them exactly how to install them and they told me they didn't try to do it that way at first. It seems like a good product, but the headers are still leaking from somewhere. I'm honestly mortified with the whole experience. They are a bit quiet, don't make a lot of noise at idle or low RPMs which I think is good if you want to run an o/r mid-pipe and not get pulled over by cops. Was really pleased with the sound until i realized my mufflers were hanging down and re-upholstered them before traveling to NC (~5hrs) and the car was just super quiet, like i might as well have not really installed them =/ (the shop did an awful, awful job. They didn't even do what I paid them to do and my car didn't run when they told me it did after asking them if they'd driven it)


    Year: 2000 Submodel: GT

    Helpful (0) (0)

  • 5/5

    August 16, 2016

    Great headers

    Mac long tubes really woke my car up it pulls much harder now


    Year: 2004 Submodel: GT

    Helpful (0) (0)

  • 5/5

    Installation Time: Shop Install

    January 12, 2016

    Highly recommended

    If you're looking for great gains with awesome sound these are your best bet for automatics. You can defiantly feel the power as it wakes up your car!


    Year: 2002 Submodel: GT Houston,TX

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    May 05, 2012

    Great Looking; Will be Nice once I drive my car in two weeks.

    I've done a complete swap from a 3.8 to a 4.6 and just wanted to say that although its been a lot of work its been really fun. I've had two MAC products in the past on my 3.8 and have always been impressed. These headers are also great looking and will peform much better than the stock manifolds so in my case since i needed a K member it was a no-brainer. I tried posting my pics but couldn't figure out how to save them as a fiel that would be uploaded. Def worth upgrading the exhaust while you have the entire engine out. Can't say much for sound yet, but will in a few weeks, but I know I won't be dissapointed.


    Year: 2002 Submodel: GT Florida.

    Helpful (0) (0)

  • 4/5

    Installation Time: Full Day

    February 24, 2012

    Great performance gain

    These headers sound great and were a simple install. They bolted right on with no problems and I also recommend the Mac prochamber to go along with the headers to have a greater performance and sound experience.


    Year: 2004 Submodel: GT Brandon ms

    Helpful (0) (0)

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