丰田RAV4 雷克萨斯 前氧传感器 89467-48160 原厂氧传感器替换件 排放达标

If the engine check light is on, fuel economy worsens, acceleration is weak, or exhaust has a strong odor, the upstream oxygen sensor may be aging and inaccurate, causing air-fuel ratio imbalance. When functioning properly, this sensor feeds real-time exhaust oxygen concentration data to the ECU to precisely control fuel delivery, ensuring combustion efficiency and emissions compliance. This product is an OEM replacement for Toyota RAV4 and Lexus models; OEM number 89467-48160; fits various 2.0L/2.5L engines. Use a dedicated socket during installation to avoid stripping threads; ensure harness connections are secure and unbent.