Subaru Outback Oxygen Sensor 22641-AA230 7481595 Original factory standard quality, precise emission control

Subaru Forester oxygen sensor (OEM: 22641-AA230, compatible with 7481595) installed on the exhaust manifold or pipe, monitors exhaust oxygen content in real time and feeds ECU to finely adjust air-fuel ratio for efficient combustion and emission compliance. Fits multiple Forester model years; installation difficulty: medium; recommended service time 0.5-1 hour; avoid damaging threads during installation. If symptoms include unstable idle, higher fuel consumption, weak acceleration, or check engine light, sensor aging or failure is indicated; replace promptly.