Ford Oxygen Sensor AE8Z9F472B 234-4493 AE819F472AB Front and Rear Universal Replacement Type

Ford front and rear oxygen sensors universal replacement, OEM AE81-9F472, compatible with AE8Z9F472B, 234-4493 and AE819F472AB. Mounted on exhaust manifold or pipe; monitors oxygen content and feeds ECU to adjust air-fuel ratio for combustion efficiency and emissions compliance. Installation medium; labor ~0.5–1 hour; avoid damaging threads. If check engine light on, rough idle, high fuel consumption, or weak acceleration, replace.