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Kooks 1-3/4 in. Long Tube Green Catted Headers (15-19 GT)

Market Price $2,621.26 You Save 12% ($301.55)
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$2,319.71 (each)

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  • Item 404494

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    Features & Details

    • Long Tube Catted Headers
    • Impressive Horsepower and Torque Gains
    • 1 3/4 Inch Mandrel Bent 304 Stainless Steel Tubing
    • Optimized Exhaust Flow and Little Back Pressure
    • Compatible with Left-Hand Drive Only
    • Made in the U.S.A.
    • Limited Lifetime Warranty
    • Hard Degree of Difficulty Installation
    • Compatible with the 2015-2019 Ford Mustang GT
    Street-Legal Exhaust Booster. Deliver impressive horsepower and torque gains with outstanding exhaust efficiency using the high-performance Kooks 1-3/4 Inch Long Tube Green Catted Headers. These long tube headers are constructed using 1 3/4 inch mandrel bent 304 stainless steel tubing for optimized exhaust flow and little back pressure, moving exhaust flow to catalytic converters to generate massive power for your vehicle.

    Specifications. This product is compatible with left-hand drive only. It is proudly made in the U.S.A.

    Warranty. A limited lifetime warranty covers any defects in materials and workmanship from the manufacturer. Any parts subjected to normal wear, alterations, or improper maintenance may not be included.

    Installation. You should expect to take up to an entire day installing this product, with a hard level of difficulty using the provided mounting hardware. Given the level of complexity, it is highly advised to visit a professional installer for service.

    Application. The Kooks 1-3/4 Inch Long Tube Green Catted Headers are compatible with the 2015-2019 Ford Mustang GT.

    Fitment: 2015 2016 2017 2018 2019 Details

    MPN# 1151H231

    CA Residents: WARNING: Cancer and Reproductive Harm -

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

      Customer Photos

        Questions & Answers (7)

        5 Top Rated Questions

        Will I need to purchase O2 sensor extensions? If so, will they be needed on both the front and back sensors or just the back?

        • No, you will not need to purchase O2 sensor extensions. This kit will include the required extensions for the install.

        Helpful (1)

        are these made to fit Right hand drive Mustangs

        • These have not been tested on right-hand drive models.

        Helpful (0)

        Will these work on a Roush Mustang with active exhaust?

        • This will work on your car yes.

        Helpful (0)

        What is the overall difference between the kooks green catted headers and the regular kooks catted headers

        • The green cat option is going to be better for the environment and are not going to throw a CEL code.

        Helpful (0)

        Will I fit the stock cat back exhaust

        • It is compatible with the stock portion of exhaust that extends behind the headers and connection pipes.

        Helpful (0)
        Post Your Question
        2 More Questions
        will these fit the catback borla atak exhaust? 1 answer
        Will this work with the Corsa Xtreme Cat Back Exhaust ? 1 answer

          Customer Reviews (1) Write a Review

          Overall Rating 5

          out of 5 stars

          • Loudness / Volume 4 4
          • Exhaust Note 5 5
          • Fit & Finish 5 5
          • Bang For Your Buck 4 4

          • 5/5

            September 11, 2018

            Fast and reliable

            Wow I've had such a great experience shopping at American Muscle. Cant wait to install my eibach lowering springs and the corsa extreme catback exhaust on my 2017 gt. Thanks guys will be back for more.


            Year: 2017 Submodel: GT

            Helpful (8)