福特翼搏氧传感器 F1FA9G444GA 替换H1B19G444AA 品质保障

Ford B-Max radar? (typo originally) Oxygen sensor F1FA9G444GA can replace H1B19G444AA, installed on the exhaust manifold or pipe, feeds oxygen content to ECU to precisely control air-fuel ratio for efficient combustion. Fits Focus/other models, installation difficulty medium; 30–45 minutes; avoid thread damage. If check engine light on, fuel consumption increases, idle is unstable, or acceleration is weak, sensor may be aging or failed.