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JBA 1-5/8 in. Cat4ward Shorty Headers (99-04 Cobra, Mach 1)

AmericanMuscle no longer carries the JBA 1-5/8 in. Cat4ward Shorty Headers (99-04 Cobra, Mach 1). Please check out 1999-2004 Mustang Long Tube Headers for an updated selection.
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AmericanMuscle no longer carries the JBA 1-5/8 in. Cat4ward Shorty Headers (99-04 Cobra, Mach 1). Please check out 1999-2004 Mustang Long Tube Headers for an updated selection.

Features & Details

  • Increases Horsepower and Torque
  • Titanium Ceramic Coated 14 Gauge Steel
  • Features JBA Sealing Dome® Collector
  • CARB EO Number: D-216-28
  • 50-State Legal
  • Fits 1999-2004 SVT Cobra and 2003-2004 Mach 1 Mustangs
Increase horsepower and torque. Now you can bolt on extra horsepower and torque that you can feel throughout the entire RPM range with a set of JBA Cat4ward® Shorty headers. These JBA Shorty headers improve your mustangs exhaust flow increasing your pony's horsepower, torque, and throttle response.

Quality Construction. These JBA Shorty headers are made to last using 3/8" thick laser-cut flanges, free flowing mandrel-bent 1-5/8" 14 gauge steel tubing, and JBA's Sealing Dome® collectors. The headers are finished in a Titanium ceramic coating for the best in thermal protection and corrosion resistance.

Titanium Ceramic Coating. These Shorty Headers are completed in JBA's Titanium 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.

Application. Designed to fit the 1999-2004 SVT Cobra and 2003-2004 Mach 1 Mustangs. These JBA shorty headers include high-quality mounting hardware, gaskets, and instructions, so that they will bolt right up to your Mustangs stock Mid Pipe.
What's in the Box
  • (1) Driver side shorty header
  • (1) Passenger side shorty header
  • (2) Header gaskets
  • (1) Exhaust gasket
  • Installation hardware
Installation Info
Tech Specs
Header Specifications
Header Type: Short Tube Finish : Ceramic Coating
Type Mid Pipe Required: Standard Fitment: 1999-2004 Cobra, 2003-2004 Mach 1

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4 Questions / 5 Answers

Ask a Question

What mid pipes will this connect with? Any of your stock length x pipes/prochamber?


  • The JBA Cat4ward Shorty Headers will connect to any stock mid pipe as well as any stock length H/X pipe or Pro Chamber.

    Rob D

Helpful (0)

Do these bolt up to 5.4 dohc heads?


  • These JBA Cat4ward Shorty Headers would bolt up to 5.4 DOHC heads. However, modification would most likely be required because of clearance issues in the engine bay.


Helpful (0)

Compatible with BBK Catted X-Pipe for GT I'm preparing for a 4v swap into my GT and I would like to know if these headers would still be compatible with the current mid-pipe on my 96 GT. It's a BBK Catted X-Pipe for Shorty or Factory headers. I really like the sound of the current setup and want to retain as much of that as possible.


  • These are are the cobra and the Mach 1 so you might have fitment problems.


Helpful (0)

I want to install after market headers on my 2003 Mach 1. Do you recommend short or long pipes? Plus, do I need to buy anything else other than the header kit itself???


  • That depends on your preference. Long tubes produce more power and torque, however they are generally more costly, more difficult to install, require more changes, and may be illegal if it relocates the position of the catalytic converters. In the case that it relocates or eliminates your cats, you may have yo reinstall your stock tubes for inspection day unless you have an insider. Short tubes produce less power and torque by only a margin, however they are easier to install, cost less generally, usually don't require you to change mid-pipes, and you wont have to worry about swapping out to the old one when inspection comes along.


Show 1 more answer Helpful (0)

Customer Reviews (9) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Weekend

Installation Cost:$500-$1000

  • Performance Gain 4 4
  • Fit 3.666667 3.7

  • 5/5

    Installation Time: Full Day

    December 28, 2016


    Great product,has a nice ceramic coating. Headers fit very well makes the car sound a lot deeper


    Year: 2004 Submodel: Mach 1

    Helpful (3)

  • 5/5

    Installation Time: Full Day

    November 04, 2013

    Some modification required.

    We had to grind the flange on the left side to clear the transmission. It would not fit without modification.


    Year: 1999 Submodel: Cobra Aurora, CO, USA

    Helpful (4)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: $500-$1000

    October 08, 2013

    JBA shorty headers

    the only shorty on the market. If you want a pair this is your best option. A real bear to install. The K member had to be dropped to do the installation. Way above the skill level I possess and the tools needed. A lift was a necessity


    Year: 2003 Submodel: Mach 1 Lexington, Ky

    Helpful (2)

  • 5/5

    Installation Time: Full Day

    January 18, 2013

    JBA Shorty -- Mach1

    Very Well made, good ceramic coat and lined up very well. Benefit needed was it allowed me to maintian the foctory Cat / Mid pipe and EGR setup which is a must for those of us affected by Emmissions tests. Oil Dip Stick re-route was needed but not a show stopper. Enhanced deeper sound when leaning into it. Certainly beats the Facory Mach1 Cast unit. JBA could bring the price down a little but all in all well worth it. SUGGESTION: I did order the Ford Racing Exhaust Gaskets (Steel insert type) which, with the Factory Stud bolt combo, seem to maintian the fitment without leaks. I suspect the normal gaskets allow for micron level vibrational movement that leads to backing off and leaks. With the metal infused gaskets that does not seem to occure. As usual American Muscle service and Shipping was fast...!


    Year: 2003 Submodel: Mach 1 Toronto, ON, Canada

    Helpful (5)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    August 06, 2012

    Love em'

    Had to re-route the dip stick but other than that, I love them!!!!


    Year: 2004 Submodel: Mach 1

    Helpful (3)

  • 5/5

    October 21, 2011

    High Quality Product. Fit is perfect.

    Installed these while the motor was out being assembled so that made it a little easier. They are a a very well built header design for those not wanting to deal with long tubes. Worth the extra money for these, but in the long run, you will spend more buying the long tubes and a mid pipe that would work together. Thats what also was a factor in buying these, they work with the stock mid pipe. Only bad thing i could say is the bolts they give you in the kit are not the proper way to hold the header down without the bolts coming loose in a few months. Even though they are shorties, they will still be a pain to tighten in the car. Do yourself a favor and get manifold studs and nuts from Ford. They are lock nuts so the likelihood of them coming loose is very minimal. I did have to use one of the included bolts on the driver side header because of the way the tube comes off the flange. I also chose to put a spacer behind the dipstick tube instead of cutting the header flange. Overall, these headers are awesome! Thanks to Karen and Rob in sales for the suggestion on these!


    Year: 2001 Submodel: Cobra PA

    Helpful (6)

  • 5/5

    December 25, 2009

    JBA Shorty Headers

    These headers made the car sound deeper, provided additional power, and created a quicker throttle response.


    Helpful (10)

  • 5/5

    October 08, 2009

    ...but worth it

    Took literally all day to put them on, but my 04 mach 1 breaths much better and the sound is 100% better. definitely can feel the difference when getting into her. worth the time and money. plus the hardware they send is great. lock washers with the header bolts. i check them every weekend and at most 1/8 inch turn to tighten up.


    Year: 2004 Submodel: Mach 1

    Helpful (13)

  • 5/5

    December 28, 2008


    I bought these because I didnt want to deal with the ground clearance issues of long tube headers. I was very surprised at the improvement they made! My exhaust flows free and smooth, the sound is more crisp, and my engine is much cooler! They also added some much needed torque. These headers dont fall short in any category. If youre looking for shorty headers, look no further!


    Helpful (16)

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