Subaru Oxygen Sensor 22641-AA480 / 22690-AA891 Dual OEM Universal

Subaru Forester, Outback, and Liberty with EJ-series engines use oxygen sensors with dual universal compatibility: OEM numbers 22641-AA480 and 22690-AA891. Zirconia ceramic core, high-temperature stainless steel shell, manufactured to OEM standards; hot-start response matches original, durability covers standard maintenance cycles. Function: monitor exhaust oxygen content and feed ECU to adjust air–fuel ratio, ensuring combustion efficiency and emission compliance. Installation difficulty: medium; use a dedicated socket; if the engine check light or high fuel consumption occurs, replace promptly.