Hyundai i20/i30/Kia Oxygen Sensor 39210-2B310 Direct Replacement

Hyundai i20 (2014-2018 1.2L/1.4L) and i30 (2012-2017 1.6L GDI/MPI) and other on-platform Kia models (e.g., Rio, Cerato) may use oxygen sensor OEM 39210-2B310. Monitors exhaust oxygen content and feeds ECU to adjust air-fuel ratio, improving fuel economy and reducing emissions. Original fitment allows direct replacement; installation difficulty: medium; professional tools recommended.