Subaru Air-Fuel Ratio Oxygen Sensor 22641-AA280 Direct Replacement O2 Sensor Universal Type

Subaru Forester, Legacy, Outback, and Impreza 2005-2012 model owners: 22641-AA280 oxygen sensor can be replaced directly with the original part without wiring changes or programming. It monitors exhaust oxygen content and feeds data to the ECU to optimize the air-fuel ratio and reduce emissions. OEM number 22641-AA280 fits 2.5L and 2.0L engines; replacement is recommended every 80,000–100,000 km. Use a dedicated socket during installation to avoid sensor tip contamination.