When your blower fan quits on some speed settings, the Dorman hvac blower motor resistor kit (part number 973-411) supplies a front blower motor speed resistor and harness pigtail. They are made to replace an overheated or corroded original equipment resistor. It fits many vehicles, among them the 1995-2001 Ford Explorer, 1995-2011 Ford Ranger and 2001-2005 Ford Explorer Sport Trac. See the "Vehicles it fits" section for the full list and engine details.
The resistor steps down the current sent to the blower motor to create the lower fan speeds. A failed unit can leave the fan working on only some settings.
- Direct replacement: Dorman designs this resistor and harness kit to directly replace the original equipment on the listed applications.
- Resistor plus pigtail: Every kit pairs the resistor with a harness pigtail, which most repairs call for.
- Performs like the original: Built to perform like original equipment. If a failed resistor is behind lost fan speeds, it is intended to return the HVAC blower to full operation.
- Engineering support: Backed by Dorman's team of engineers and quality specialists in the USA.
Signs the resistor may need replacing include a blower that runs on some settings but not others. A switch, wiring or motor fault can cause similar symptoms, so diagnose the system before replacing parts.
Interchange: 4P1368 · RU1098 · 4L5Z19A706AA · F5TZ19A706B · 20321 · 2BMR0294 · RU404 · JA1506
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
4P1368, RU1098, 4L5Z19A706AA, F5TZ19A706B, 20321, 2BMR0294, RU404, JA1506
Frequently Asked Questions
What does a Dorman blower motor resistor do?
It sets the blower fan's lower speeds by changing the current that reaches the blower motor, so each fan-speed setting delivers a different airflow.
What comes in the box?
Each kit includes a blower motor speed resistor and a harness pigtail, supplied together to replace an overheated or corroded original equipment resistor.
Will this fit my 1995-2001 Ford Explorer?
Yes. Part 973-411 is listed for the 1995-2001 Ford Explorer, as well as the 1995-2011 Ford Ranger and 2001-2005 Ford Explorer Sport Trac. Confirm your exact vehicle in the "Vehicles it fits" section.
What are signs the blower motor resistor may need replacing?
Common signs include a blower that works on some speed settings but not others, or no airflow at the lower settings. A switch, wiring or motor fault can cause similar symptoms, so diagnose the system first.
Is the Dorman blower motor resistor kit a direct replacement?
Yes. Dorman designs it to directly replace the original equipment on the listed applications. Follow the vehicle service information when installing the resistor and connecting the harness pigtail.
