奔驰A200L 1.3T前氧传感器 0005422404 专车专用 原厂替换

Mercedes-Benz A200L 1.3T dedicated upstream oxygen sensor (OEM: 0005422404) directly replaces the original, non-interchangeable with other models; installs in original location. It monitors exhaust oxygen content in real time and feeds ECU to precisely adjust fuel injection to ensure efficient combustion. Fits domestic and imported A200L variants. Replacements resolve idle instability, high fuel consumption, weak acceleration, and MIL; if vehicle shows starting difficulty, black smoke from exhaust, or sudden fuel increase, upstream O2 sensor aging is the cause; replace to restore small-displacement turbo performance.