BMW 520Li 2010 Model Oxygen Sensor 11787573321 0258010026 Vehicle-Specific No Programming Required

BMW 520Li 2010 oxygen sensor (OEM 11787573321 / Bosch 0258010026) specialized for the car, plug-and-play replacement with no programming. Installed in the exhaust manifold or pipe; monitors exhaust oxygen content and feeds ECU to control air-fuel ratio for efficient combustion. If idle is unstable, fuel economy rises, power is reduced, or check engine light is on, sensor aging is likely. Labor time 0.5-1 hour; avoid thread damage; installation mid-level.