Often times when a test pipe is utilized, a Check Engine Light will come on with an O2 sensor code. This is due to the increased exhaust temp caused by the lack of a catalytic converter. The CZP CEL Eliminator simply spaces the O2 sensor up and out of the mainstream of the exhaust flow, eliminating excessive heating, while still allowing the O2 sensor to read the exhaust flow content. The CZP CEL Eliminator simply threads into the existing bung, then the O2 is threaded into the CEL Eliminator. Sold as 1 Individual CEL Adapter.

Please note: May not fit certain combinations of vehicle, transmission, and test pipe/catalytic converter. Please confirm you will have clearance to space O2 sensors out before ordering.