This kit allows a new style heated oxygen sensor to be installed on a vehicle that originally came with a non-heated, 1 wire sensor. The heated oxygen sensors are more active and more responsive than the non-heated sensors and are also more resistant to contaminates such as lead.
Typical applications are late 1980's throguh early 1990's GM vehicles when aftermaret headers are used or a great choice when replacing the factory non-heated O2 sensors. Simple two-wire installation. Kit comes complete with 4-wire heated oxygen sensor and adapter harness.