BMW Mini 2.0T Oxygen Sensor 11788604889 (0258030079), High-Efficiency Sensing.

2014-2020 BMW Mini Cooper S (F56/F55/F57) and Clubman (F54) 2.0T engine (B48A20) dedicated oxygen sensor, numbers 11788604889/0258030079, also fits some 2016+ BMW X1 (F48) 2.0T models. Monitors exhaust oxygen content and feeds signal to ECU to optimize air-fuel ratio, effectively addressing rough idle, high fuel consumption, or engine fault light. Installed in the exhaust pipe; note wire routing during replacement to ensure stable signal transmission.