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Kooks O2 Sensor Extension Harness (15-17 GT)

Item 399821
AmericanMuscle no longer carries the Kooks O2 Sensor Extension Harness (15-17 GT). Please check out 2010-2014 Mustang O2 Sensors for an updated selection.
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Features & Details

  • Reduces Engine Noise and Boosts Fuel Efficiency
  • Heavy-Duty, Heat-Resistant Steel Construction
  • Race- and Dyno-Tested
  • High-Quality Extension Harness at a Reasonable Price
  • Simple, Bolt-On Installation for Everyone
  • Limited Lifetime Manufacturer’s Warranty
  • Sold Individually
  • Fits All 2015-2017 Ford Mustang GT Models

Superior-Quality Harnesses. Kooks is a leading manufacturer in the exhaust industry with more than 50 years of manufacturing experience. Kooks O2 extension harnesses undergo dyno-testing and race testing procedures to guarantee quality and adhere to the set industry quality and safety standards. You will never go wrong with these Kooks Oxygen Extension Harnesses.

Quality Assembly. The Oxygen Sensor Extension Harness by Kooks is crafted from superior-quality steel material to serve you for several years. Designing of this extension harness uses state-of-the-art technology to ensure that they last a lifetime. Kooks extension harnesses will satisfy your needs and deliver excellent quality at a reasonable cost.

Easy installation. These harnesses are simple and quick to install using commonly available household tools. Basic mechanical expertise and approximately 20 minutes of your time are all you need to completely mount these extension harnesses on your Ford Mustang.

Warranty. Kooks Extension Harnesses have a limited lifetime warranty from the manufacturer. This means that the original buyer can get a replacement or repair services for these extension harnesses if the problem is due to poor workmanship or faulty materials. However, this warranty does not cover the polish, paint or coatings.

Application. The Kooks O2 Harnesses are ideal for extending the front or rear O2 sensor harnesses on all 2015-2017 Ford Mustang GT models. Sold individually.

Fitment: Details

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Sensor Extension Harnesses
Installation Info
Tech Specs
Will it fit my Mustang?

    Customer Photos

      Questions & Answers (1)

      1 Top Rated Question

      Can these be used with installing the Pypes Long Tube headers?

      • Yes you will be able to use these to relocate your oxygen sensors.

      Helpful (0)
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        Customer Reviews (3) Write a Review

        Overall Rating 4

        out of 5 stars

        • 5/5

          April 23, 2019

          Did the job

          Came in as expected and did the job for my long tube headers


          Year: 2015 Submodel: GT

          Helpful (0)

        • 2/5

          January 18, 2018

          o2 extensions

          One fit perfect but the other side was too short and had to buy another extension set.


          Year: 2017 Submodel: GT

          Helpful (9)

        • 5/5

          November 29, 2017


          That product is super nice and I'm reviving it to all my friends


          Year: 2016 Submodel: GT

          Helpful (9)

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