Toyota Water Temperature Sensor B593-18 89422-35010 13650-51G10 Precise Match

Toyota models such as Corolla, Camry, RAV4 can use coolant temperature sensor B593-18, directly replacing OEM numbers 89422-35010, 89422-20010 or 13650-51G10. Monitors coolant temperature and sends signal to ECU to adjust injection and ignition, ensuring engine operates at optimal temperature. After installation, it can solve cold start problems or idle instability. If gauge fluctuates or warning light comes on, the sensor likely aged and needs replacement.