Ford Mondeo Zhisheng Front Oxygen Sensor 6G91-9F472-AAA Direct replacement OEM part

Ford Mondeo (older model) Prestige front oxygen sensor (OEM 6G91-9F472-AAA) directly replaces the OEM part; compatible with all models. Monitors exhaust oxygen content to help ECU precisely adjust air-fuel ratio, addressing high fuel consumption, weak acceleration, or persistent check engine light. If idle unstable, strong fuel odor, or sudden fuel economy drop, likely aging oxygen sensor. Direct replacement; after installation, engine combustion efficiency is restored.