起亚瑞纳后氧传感器39210-03730，精准控制排放系统

This rear oxygen sensor is designed for 2010-2016 Hyundai Accent/Verna 1.4L and 1.6L gasoline engines; matches OEM emission-control requirements. It monitors exhaust oxygen content in real time and feeds ECU to optimize air-fuel ratio, ensuring high-efficiency three-way catalytic converter operation and reduced emissions. OEM 39210-03730; cross-check with vehicle parts to avoid incompatibility. Replacement difficulty: medium; use dedicated oxygen sensor socket; avoid wire tension. After installation, clear fault codes with a scan tool and reset learning. As a proprietary product, this sensor uses high-temperature ceramic elements with life expectancy over 80,000 km; suitable for wholesalers to bulk-purchase to reduce stocking costs.