BMW E81 E88 E90 E91 E60 Oxygen Sensor 11787558054 Multi-Model Universal

BMW chassis models E81, E88, E90, E91, E60 with N46 or N52 engines (1 Series, 3 Series, 5 Series) compatible with oxygen sensor OEM 11787558054. Highly versatile. Installs in exhaust system to monitor oxygen content in real time, sending feedback to ECU to optimize air-fuel ratio, helping reduce fuel consumption, improve acceleration, and pass emissions, eliminating Malfunction Indicator Lamp and rough idling.