When installing a high flow catalytic converter on your car or truck your check engine light (CEL) may illuminate due to an increase in airflow. An oxygen sensor spacer spaces out the rear oxygen sensor from the path of exhaust gases. This tricks the vehicle's ECU into thinking that factory catalytic converter is still in place. There is NO GUARANTEE this will prevent a CEL on your vehicle because modern ECUs are very complex and rely on a variety of factors to determine if the catalytic converter is working properly.

Features:

• 1x 90° O2 Oxygen Sensor

• Universal fit for all M18X1.50 speci Vehicle
• Design to fit most vehicle with the M18x1.5 O2 sensor hole. Over 99% success rate even on exotic cars and euro cars.