What is this harness used for?

This O2 extension harness is used when installing long tube headers on your 2018+ Ford Mustang. Long tube headers often require the front O2 sensors to be relocated further downstream, requiring extended wiring to reach the sensor.

Is this harness only for Kooks Headers?

While this harness is made by Kooks Headers, it can be used with any brand of long tube headers that require extending the front O2 sensor wiring on 2018+ Ford Mustangs. Just make sure the connector is compatible with your O2 sensors.

Does this come with installation instructions?

This O2 extension harness is a simple plug-and-play installation. However, refer to the manufacturer's installation instructions for your specific headers for any additional guidance.

Kooks 18+ Ford Mustang 8in. Front O2 Extension Harness

1 / 2

Kooks Headers

Kooks 18+ Ford Mustang 8in. Front O2 Extension Harness

Name: Kooks 18+ Ford Mustang 8in. Front O2 Extension Harness
Brand: Kooks Headers
Price: 36.16 USD
Availability: InStock

$36.16

Extension harness for front O2 sensors on 2018+ Ford Mustangs.

Key Features

Extends front O2 sensor wiring — simplifies header installations
Direct fit — no cutting or splicing

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Fits this vehicle

Ford Mustang 2018-2024

Need Help?

631-982-0042

Fast Shipping

Nationwide delivery

Secure Checkout

Safe & protected

Since 1957

Family-owned

Product Details

Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!"