NOx Sensor Oxygen Sensor Oxygen Sensor 31902V020000 280023420000 31902J280000 For Keeway For Superlight K For Light For RKV For RKS TX 125 Exhaust O2 Lambda Probe

31902V020000 280023420000 31902J280000 For Keeway For Superlight K For Light For RKV For RKS TX 125. The oxygen sensor compensates for air-fuel ratio errors caused by wear of other components of the electromechanical fuel injection. The function of the oxygen sensor is to monitor the mixture at all times to keep the engine in the best mixture combustion state. Replacing the air-fuel ratio oxygen sensor helps the engine run efficiently in air-gas ratio, improves fuel economy while reducing harmful emissions. Heat up quickly to help the engine get to work faster.