HHAWYY Oxygen Sensor for Hyundai Elantra GT Kona Sonata Tucson Veloster, Front Upstream Air-fuel Ratio 392102E100

✅ The front oxygen sensor (air-fuel ratio oxygen sensor) is usually installed in front of the three-way catalytic converter. Its main task is to monitor the oxygen content in the exhaust gas after the mixture in the engine combustion chamber is burned. ✅ Damage to the oxygen sensor will cause black smoke from the exhaust, unstable idle speed, excessive fuel consumption, power loss, engine hysteresis... up to 19 faults. It should be replaced as soon as possible. ✅ Differentiation and identification -- The oxygen sensor is divided into front and rear (upstream and downstream) oxygen sensors. They have different functions and different installation positions. Pay attention to identification when purchasing. ✅ Functional and quality tests meet the same standards as original parts: high performance and reliability over a long service life. ✅ The part number is the safest way to confirm! (The part number and compatible vehicle information are detailed on the page, the part number shall prevail.)