Control your blower fan's speed settings the way the factory design intended with the Dorman hvac blower motor resistor kit, part number 973-442. It pairs a resistor with a harness pigtail to replace an original equipment resistor that has overheated or corroded. It fits many vehicles, among them the 1992-2011 Ford Crown Victoria, 1991-2011 Mercury Grand Marquis and 1991 Ford Country Squire. See the "Vehicles it fits" section for the full list and engine details.
The blower motor resistor limits the current that reaches the HVAC blower motor, which gives the fan its lower speed settings. If a failed resistor is why your fan runs only on high or skips speeds, this Dorman blower motor resistor kit replaces it and includes a new connector pigtail.
- Direct replacement: This resistor and harness kit is designed to take the place of the original equipment on the listed applications.
- Resistor and pigtail together: Each kit contains a resistor and a harness pigtail. Dorman notes the pigtail is essential for most repairs.
- Performs like the original: The kit is made to perform like original equipment and is intended to return full HVAC blower operation when the resistor is at fault.
- Quality backing: A team of engineers and quality specialists in the USA supports the kit.
Interchange: 4P1587 · 4P1593 · RU1135 · RU1278 · 6W7Z19E624A · 8W7Z19E624A · F4VY19E624A · F7VZ19E624AA · F8VZ19E624AA · F8VZ19E624BA · F8VZ19E624BB · F8VZ19E624BC · XW1Z19E624AA · YW1Z19E624AA · 20370 · RU572 · RU585 · JA1710 · JA1716
This part cross-references / interchanges with the following part numbers:
4P1587, 4P1593, RU1135, RU1278, 6W7Z19E624A, 8W7Z19E624A, F4VY19E624A, F7VZ19E624AA, F8VZ19E624AA, F8VZ19E624BA, F8VZ19E624BB, F8VZ19E624BC, XW1Z19E624AA, YW1Z19E624AA, 20370, RU572, RU585, JA1710, JA1716
Frequently Asked Questions
What does a blower motor resistor do?
It limits the current that reaches the HVAC blower motor, which gives the fan its lower speed settings. The resistor in this kit replaces an original that has overheated or corroded.
What comes in the 973-442 kit?
Each 973-442 kit includes a resistor and a harness pigtail. Dorman notes that the pigtail is essential for most repairs.
What are signs the blower motor resistor may need replacing?
Common signs are a blower that runs only on high, fan speeds that stop working, or a resistor that looks overheated or corroded. Diagnose the problem first, because a switch or motor fault can cause similar symptoms.
Will it fit my 1992-2011 Ford Crown Victoria?
It is a direct-fit replacement for the 1992-2011 Ford Crown Victoria and is also listed for the 1991-2011 Mercury Grand Marquis. Check the "Vehicles it fits" section for other vehicles.
How is the kit installed?
Follow your vehicle's service information to remove the original resistor and connect the included harness pigtail. Disconnect the battery before you work on the circuit.
