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Kooks 1-7/8 in. Long Tube Catted Headers (15-19 GT)

Market Price $2,039.99 You Save 12% ($235.25)
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$1,804.74 (each)

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  • Item 404496
  • MPN# 1151H421

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Ship to: Ashburn - 20149
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    Features, Video & Details

    • Long Tube Catted Headers
    • Aggressive Throaty Sound
    • Small Gains in Horsepower and Torque
    • Mandrel Bent, 1 7/8 Inch, 304 Stainless Steel Tubing
    • Scavenger-Spiked Collectors
    • Precise OEM Quality Fit
    • For Off-Road Use Only
    • Limited Lifetime Warranty
    • Hard Degree of Difficulty Installation
    • Compatible with the 2015-2019 Ford Mustang GT

    Review & Installation Video

    Review & Install Video

    Long Tube Header Design by Kooks. The Kooks 1-7/8 Inch Long Tube Catted Headers deliver outstanding exhaust flow, resulting in an aggressive throaty sound and small gains in horsepower and torque for your vehicle.

    Built to Perform. This product is made to last, constructed using 1 7/8 inch, 304 stainless steel tubing, which is mandrel bent, connecting with scavenger-spiked collectors to deliver innovative airflow with a precise OEM quality fit. It is designed for off-road use only, not for use on regulated vehicles.

    Warranty. Rest assured with a limited lifetime warranty from Kooks, which protects against defects in materials and workmanship.

    Installation. It takes roughly a day to install this product with a hard level of difficulty. Given the level of complexity, it is highly advised to visit a professional installer or auto service center for assistance.

    Application. The Kooks 1-7/8 Inch Long Tube Catted Headers are compatible with the 2015-2019 Ford Mustang GT.

    Fitment: 2015 2016 2017 2018 2019 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • Long Tube Catted Headers
    • Mounting Hardware
    Installation Info
    Will it fit my Mustang?

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    Customer Photos

    Questions & Answers (8)

    5 Top Rated Questions

    Are you sure these will fit a 2018 GT? Have you installed them on a 2018 GT?

    • Yes, these headers will fit the 2018 GT Mustang without a problem. We did test fit these headers on a 2018 GT Mustang as well and confirmed with Kooks to be sure of the fitment for the 2018 model Mustangs.

    Helpful (1)

    What the difference between these cats and the green cats?

    • Kooks Green catalytic converters meet EPA emission standards and eliminate emissions related check engine lights.

    Helpful (0)

    Will these headers require a tune and void the warranty of my 2018 5.0?

    • No tune is required for these headers and we would advise reaching out directly to your local dealership in regards to any information pertaining your warranty.

    Helpful (0)

    Will they fit with a Borla ATAK cat-back system with the X-pipe ?

    • The Kooks 1-7/8 in. Long Tube Catted Headers will attach directly to the X Pipe in your Borla Atak Cat-Back exhaust.

    Helpful (0)

    Will these catted headers keep me legal in PA when it comes time for emissions testing?

    • Yes, these catted headers will definitely help in keeping your Mustang legal when getting tested for emissions.

    Helpful (0)
    Post Your Question
    3 More Questions
    Are these high flow catted? And are they good with a pro charger engine? 1 answer
    I plan on purchasing a Corsa Extreme Cat-back exhaust system for my 2015 mustang Fastback. Are these a good fit or would i have to go with something else? 1 answer
    Is this CA legal 1 answer

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    Customer Reviews (2) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$500-$1000

    • Loudness / Volume 5 5
    • Exhaust Note 5 5
    • Fit & Finish 5 5
    • Bang For Your Buck 4.5 4.5

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      October 03, 2018

      awesome headers

      These headers sound great. The power increase was awesome. They are very loud paired with my Corsa sport exhaust.


      Year: 2018 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Full Day

      May 21, 2018

      Awesome and worth it

      Felt the gains in power and sound immediately after installing them, even before the tune. They come with everything you need to install them including some pretty awesome Stage 8 hardware. Would buy these again in a heartbeat. These are a a good challenge to install, definitely put aside at least a full day to get these on.


      Year: 2016 Submodel: GT

      Helpful (7)

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