Toyota Highlander Oxygen Sensor 89465-48250, Generic Replacement 89465-48110 Factory Standard Installation

Toyota Highlander oxygen sensor (OEM 89465-48250) compatible with replacing 89465-48110; standard installation requires no wiring changes. Monitors exhaust oxygen content and feeds back to the ECU to adjust air–fuel ratio for combustion efficiency. Fits Highlander 2.7L and 3.5L; after installation, it can resolve high fuel consumption, weak acceleration, or excessive emissions. If the engine warning light is on constantly, idle is unstable, or the exhaust emits black smoke, it’s generally due to aging oxygen sensor; replace promptly.