Description
This BMW blower final stage resistor, OEM number 64.11-8377579, is a used original HVAC electrical component for BMW models. It is the blower speed control unit commonly fitted in the cabin heating and air conditioning system, regulating interior fan operation with smooth speed adjustment.
Its job is to manage power delivery to the blower motor so the climate system can increase, reduce, or stabilize cabin fan speed as selected from the vehicle controls. When operating correctly, it helps maintain steady airflow for heating, demisting, and air conditioning performance throughout normal driving.
Common signs of a faulty unit include an interior fan that works only on certain speeds, runs continuously, changes speed on its own, or stops working completely. Irregular airflow, intermittent blower operation, or battery drain caused by a fan that stays on can also point to a failing final stage resistor.
This is a used genuine part removed from a vehicle and tested before sale. Match the exact OEM number 64.11-8377579 before ordering. Professional installation is recommended, and coding, programming, or adaptation may be required where appropriate for the vehicle system.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
