Replace a heat-damaged or corroded fan speed resistor at its source with the Dorman HVAC blower motor resistor kit, part number 973-468, which pairs a front blower motor resistor with a harness pigtail. It fits many vehicles, among them the 2006-2012 Ford Fusion, 2007-2012 Lincoln MKZ and 2006-2011 Mercury Milan. See the "Vehicles it fits" section for the full list.
The blower motor resistor sets the speed of the HVAC blower fan by changing how much current reaches the motor at each fan setting. Dorman designed this kit to replace an overheated or corroded original equipment resistor, and it supplies a harness pigtail along with the resistor.
- Direct replacement: This resistor and harness kit is designed to directly replace the original equipment on the listed applications.
- Resistor plus pigtail: Each kit contains a resistor and a harness pigtail, which Dorman notes is essential for most repairs.
- Built to perform like the original: Made to perform like the original equipment. If a failed resistor is behind your blower trouble, this kit is intended to bring back normal HVAC fan operation.
- Engineering support: Backed by Dorman's team of engineers and quality specialists in the USA.
Signs this part may need replacing include a blower that runs only on its highest setting, fan speeds that no longer work, or a blower that does not run at all. Other faults can cause these same symptoms, so diagnose the system before you replace parts.
Interchange: 4P1370 · RU1340 · RU650 · RU650HTK · JA1508
This part cross-references / interchanges with the following part numbers:
4P1370, RU1340, RU650, RU650HTK, JA1508
Frequently Asked Questions
What does a blower motor resistor do?
It controls the speed of the HVAC blower fan by changing how much current is sent to the blower motor at each fan setting.
What comes with the Dorman blower motor resistor kit?
Each kit includes a front blower motor resistor and a harness pigtail. Dorman notes that the pigtail is essential for most repairs.
Will this fit my 2006-2012 Ford Fusion?
Yes. The 2006-2012 Ford Fusion is a listed application, as are the 2007-2012 Lincoln MKZ and the 2006-2011 Mercury Milan. Check the "Vehicles it fits" section for your exact vehicle.
What are signs the blower motor resistor may need replacing?
Common signs include a blower that works only on its highest setting, fan speeds that no longer work, or no blower operation at all. Other faults can cause these symptoms, so diagnose the system first.
How does this kit install?
It is designed as a direct replacement for the original equipment on the listed applications and comes with a harness pigtail. Follow the vehicle service information for the installation steps.
