Subaru Genuine Standard Oxygen Sensor 22690-AA940 OZA610AF1 Reliable and durable, compatible with multiple Subaru models

Subaru factory standard oxygen sensor 22690-AA940 (OZA610AF1) designed for 2008-2014 Impreza, Outback, Legacy, and WRX 2.5L; compatible with some 2010-2016 XV Crosstrek and BRZ. Core function: real-time monitoring of exhaust oxygen and feeding ECU to adjust air-fuel ratio for efficient combustion and low emissions. OEM cross-checkable numbers to avoid misfit. Replacement difficulty moderate; use a dedicated socket to remove the old sensor.