68164627AA Engine Coolant Temperature Sensor Overview The 68164627AA Engine Coolant Temperature Sensor accurately monitors the temperature of engine coolant and sends an electrical signal to the vehicle's engine control systems. Proper temperature sensing is essential for engine control, cooling fan operation, fuel mixture management and accurate dashboard temperature readouts. Key benefits Restores accurate coolant temperature readings to the engine control unit and instrument cluster. Helps prevent overheating and engine damage by enabling correct fan control and ECU responses. Resolves temperaturerelated fault codes and intermittent gauge or performance issues. Compact design for straightforward replacement when the original sensor fails. What this part does Measures coolant temperature and converts it into an electrical signal. Signals the ECU to adjust fuel delivery, ignition timing and cooling fan operation based on coolant temperature. Provides input used by the dashboard temperature gauge to keep the driver informed. Important attributes Part number: 68164627AA (use this number to confirm fitment). Functionality: Engine coolant temperature sensing and signal transmission to vehicle electronics. Design: Compact sensor intended for installation in the vehicle's coolant circuit (threaded or insertionmount type depending on vehicle application). Performance: Provides temperature feedback required for reliable engine management and cooling system control. Compatibility: Intended for vehicles that specify part number 68164627AA. Confirm vehicle fitment with the part number before or installation. Common applications / use cases Replacement of a failed coolant temperature sensor that is causing incorrect temperature gauge readings, erratic fan operation or diagnostic trouble codes. and diagnostics: used by technicians to clear temperaturerelated fault codes and restore proper ECU behavior. Preventive maintenance: replaced during routine engine cooling system service to maintain accurate temperature monitoring and reduce the risk of overheating. Installation tips Confirm vehicle compatibility by matching the part number 68164627AA with manufacturer fitment lists or service documentation. when the sensor shows signs of failure (erratic readings, check engine light codes related to coolant temperature, or obvious physical damage). Follow vehicle manufacturer torque and sealing recommendations when installing to prevent leaks and ensure reliable operation. Why this part matters A functioning coolant temperature sensor is critical to the engine's ability to run efficiently and safely. Using the correct part number (68164627AA) ensures the vehicle receives accurate temperature information needed for fuel control, emissions management and cooling system operation. faulty sensors promptly to maintain vehicle performance and prevent potential engine damage.