东风标致雪铁龙 后氧传感器 1618AL 9653791880 精准匹配

Dongfeng Peugeot-Citroën rear oxygen sensor, OEM 1618AL, 9653791880, 9636968580; cross-compatible widely; direct install. Monitors exhaust oxygen content and feeds ECU to adjust air–fuel ratio; fits 307, 408, Citroën C4 Sedan, C4L; when vehicle has high fuel consumption, weak acceleration, excessive emissions, or check engine light on, replace to resolve. Also check for deterioration of upstream sensors.