2017-2020 Year Engine Cooling Radiator Fan Motor Compatible with BMW G30 G31 520i 530i 540i 518d 520d 525d 530d 17428677741

==========Origin : Mainland ChinaOEM NO. : 17428677741,17428619627,17427953401,17427933875

• model: Voltage is adjusted by resistors Compatible With voltage division or through knobs to change the motor speed (such as low / medium / high three-speed air volume)
• During cooling: The fan blows the cooled air from the evaporator into the vehicle, while also helping to dissipate heat from the evaporator. When heating: In combination with the heating water tank, the heat from the engine coolant is transferred to the cockpit.
• Defogging mode: Usually automatically switches to maximum air volume + external circulation, quickly removing the fog on the glass.
• The air flow fluctuates greatly or is completely absent: This might be due to motor failure, poor electrical contact in the circuit, or damage to the resistor.
• Only the top gear has wind: This is usually caused by a damaged airflow control resistor (Compatible With the top gear, bypass the resistor and supply power directly).