Replace OE Number: 15-81773, 1581773, 19260762, 22754990, 15850268, 10325408, 10356906, 10397570, 15827470, 15827491, 52497491, 89018653, 89018849, 93803635, 973-508, 973508. When you adjust the speed of the fan in the car, you are actually adjusting the current that the a/c blower motor resistor allows to reach the fan motor.
