福特探险者锐界前氧传感器BL3Z-9F472 替代234-5038

This front oxygen sensor is designed for 2011-2019 Ford Explorer (3.5L/3.7L V6) and 2015-2018 Ford Edge (2.0T/3.5L); perfectly matches factory exhaust system. Core function: monitor exhaust oxygen content in real time and feed ECU with air-fuel ratio data to ensure efficient combustion and reduced emissions. OEM number BL3Z-9F472 (cross-reference 234-5038); compatible with CA38188G1, 9E5Z9F472D, and BL3Z9G472A. Replacement difficulty: medium; use professional oxygen sensor sleeve wrench; avoid damaging threads; disconnect battery negative before installation to prevent ECU misreporting. For B-end buyers, this sensor uses high-temperature ceramic elements with a service life of 80,000 km+, and includes anti-rotation spacer to reduce vibration-induced loosening.