64116923204 64116929486 Blower Motor Resistor AC Heater Fan for BMW E39 E53 E83 E46 E36 325 328 M3 64116931680 64118380580 64116929540 OEM No.: 64116931680 , 64116923204 , 64118385549, 64116929486 , 64118383835 , 64118364173, 64118377579 , 64116929540 , 64118380580, JGO000021, 5HL351321511. Fit for BMW E39 E46 E53 M3, M5, X5, X3, 3 Series 320i 323Ci 323i 325Ci 325i 325xi 328Ci 328i 330Ci 330i 330xi, 5 Series 525i 528i 530i 540i . Controls the fan speed in your AC and heating system,restores heating and cooling system to original peak performance.If you can no longer adjust the air speed with your AC controls or your air conditioner system no longer blows that means you need a new blower motor resistor. Easily installs into your AC blower motor. Simply remove the screws that secure the blower motor resistor into the blower, remove the resistor assembly, and install the new resistor in original place. Please check the description and compatibility chart before your purchasing.Also make sure that the part you are replacing looks exactly like the one on the picture.