Function of Automotive Nitrogen Oxide Sensor: Its primary function is to monitor the oxygen content in the engine, thereby regulating fuel injection. Our automotive NOx sensors effectively reduce NOx emissions and protect the environment. 14 Piece Oxygens Sensors Socket Set Nut Sockets 3/8" 1/2" Drive Remover Tools Car Repair Spanners With Storage Box. Oxygens sensors sockets for quick installation and disassembly, car repairing tools, great for automotive repair and maintenance tasks. omotive Oxygens Sensors Sockets Set is designed to remove or install oxygens sensors safely and efficiently, reducing the risk of damage to the sensors., Manufacturer: Jjwdl