现代ix35索纳塔2.0L氧传感器39210-2E100 环保升级 适配39210-2B420

This replacement uses dual ceramic discs and high-temperature alloy housing; more robust against thermal shock and corrosion than original; measured lifespan 80,000-100,000 km. OEM 39210-2E100, also compatible with 39210-2B420, 36531RL0G02, 0281004106; fits Hyundai ix35 and Sonata 2.0L. Function: monitor exhaust oxygen content and feed back to ECU to adjust air-fuel ratio, reduce fuel consumption and emissions. Replacement difficulty medium; remove old sensor, tighten with a special sleeve; avoid damaging threads; typically half an hour.