If your cab fan has lost some of its speed settings, the Dorman HVAC blower motor resistor kit 973-5092 from Dorman - HD Solutions pairs a new resistor with a harness pigtail. It replaces an overheated or corroded original equipment resistor. It fits many vehicles, among them the 1995-1997 International 1652UPS, the 1992-1999 International 3600 and the 1991-1994 International 3900FC. See the "Vehicles it fits" section for the full list and engine details.
The blower motor resistor adds resistance to the blower motor circuit to set the fan's lower speeds. When the resistor overheats or corrodes, the blower may run only on its highest setting or skip speeds. If a failed resistor is the cause, this kit replaces it along with its wiring connection.
- Direct replacement: This resistor and harness kit is designed to directly replace the original equipment on the listed applications.
- Resistor plus pigtail: Each kit comes with a resistor and a harness pigtail. Dorman calls the pigtail essential for most repairs.
- Built to perform like the original: Made to perform like original equipment, so the HVAC blower can operate normally again when the old resistor was at fault.
- Engineering backing: Supported by Dorman's team of engineers and quality specialists in the USA.
Diagnose the blower circuit before replacing, because a faulty switch, wiring or motor can cause similar symptoms.
Interchange: 577.55592 · 577.55592H
57755592 · 57755592H · 1696836C1 · MT1361
This part cross-references / interchanges with the following part numbers:
577.55592, 577.55592H, 1696836C1, MT1361
Frequently Asked Questions
What does a blower motor resistor kit do?
The resistor sets the HVAC blower fan's lower speeds by adding resistance to the motor circuit. This kit pairs a new resistor with a harness pigtail to replace an overheated or corroded original.
Why does a Dorman blower motor resistor come with a harness pigtail?
Dorman includes the harness pigtail because it is essential for most repairs. It lets you replace the wiring connection to the resistor at the same time as the resistor itself.
What are signs the blower motor resistor may need replacing?
Common signs include a blower that runs only on its highest setting or skips some fan speeds. A switch, wiring or the motor can cause similar symptoms, so diagnose the cause before replacing the resistor.
Will this kit fit my 1992-1999 International 3600?
It is listed for the 1992-1999 International 3600, the 1995-1997 International 1652UPS and the 1991-1994 International 3900FC. Check the "Vehicles it fits" section to confirm your exact truck.
How is the 973-5092 kit installed?
It is designed as a direct replacement for the original equipment resistor and harness on the listed applications. Follow your vehicle's service information for access and wiring connection steps.
