2014-2019 C7 Kooks O2 Sensor Extension Harness Kit

Ensure proper O2 sensor placement with the Kooks O2 Sensor Extension Harness Kit (Part #EX685-Z). This kit includes one 16-inch and one 21-inch O2 sensor extension harness, designed to properly relocate oxygen sensors when installing Kooks long-tube headers on a variety of performance vehicles. Proper O2 sensor positioning is critical for maintaining correct air-fuel ratio feedback to the ECU, especially with long-tube headers. This harness kit is included with many Kooks header kits but is also available separately for builders who need replacement or extra extensions. Made in the USA to Kooks' quality standards. Get the right sensor position - shop Kooks #EX685-Z today.

The history of Kooks Headers & Exhaust dates back to 1962 when George Kook (Papa Kook) used his gas torch to build his first set of headers for his family's race car. Involved heavily in racing, his talents did not go unnoticed by all the local racers. Papa Kook competed week in and week out at area drag strips. The business of building high-quality race headers and exhaust systems continues to this day. Choose Kooks for a proven bolt-on performance improvement that you can feel and hear.