斯巴鲁 森林人 翼豹 前氧传感器 22641-AA180 22641AA180

Subaru Forester and Impreza front oxygen sensor 22641-AA180, installed in the exhaust manifold or front exhaust pipe, monitors oxygen content in exhaust after combustion and feeds back to the ECU to precisely control the air-fuel ratio. Fits many Subaru models with 2.0L/2.5L engines. Installation difficulty is moderate; approximate labor 45 minutes to 1 hour. When the malfunction indicator lamp lights up, fuel economy worsens, idle is unstable, or acceleration is weak, it usually indicates sensor aging or failure and replacement is required to ensure emissions and performance.