荣威前后氧传感器10399754，双效合一，改善燃烧，适配多款车型。

Roewe 350, 360, 550, 750 and MG6, MG5 on common platforms use front and rear oxygen sensors with OEM number 10399754; dual-effect design does not require installation position differentiation; direct replacement of original part. Core function is to monitor exhaust oxygen content and feedback to ECU to adjust air-fuel ratio, improving combustion efficiency and solving idle roughness, acceleration weakness, and high fuel consumption, while eliminating black smoke and foul odors from exhaust.