Take care of an overheated or corroded blower resistor with the Dorman blower motor resistor kit, part number 973-428, a direct replacement for the 2005-2007 Jeep Grand Cherokee and 2006-2007 Jeep Commander. This Dorman HVAC blower motor resistor kit comes with a new resistor and a harness pigtail, so you can replace the resistor and its connector in the same repair.
- Direct replacement: Directly replaces the original equipment resistor and harness on the listed Jeep applications.
- Resistor and harness pigtail included: Each kit includes both pieces. Most repairs need the pigtail.
- Built to perform like original equipment: Designed to return normal HVAC blower operation when a failed resistor is the cause of the problem.
- Engineering support: Backed by Dorman's team of engineers and quality specialists in the USA.
How it works: The blower motor resistor sets the blower motor's speed by varying the current it receives. This gives you the fan settings you choose at the HVAC controls.
Signs it may need replacing: The blower works on only some speeds or not at all, or the resistor connector is melted or corroded. Switches, wiring and the blower motor can cause similar symptoms, so diagnose the cause before replacing parts. Engine-specific details are listed in the "Vehicles it fits" section.
Interchange: 4P1339 · RU1181 · 5143127AA · 20363 · 2BMR0306 · RU488 · JA1477
This part cross-references / interchanges with the following part numbers:
4P1339, RU1181, 5143127AA, 20363, 2BMR0306, RU488, JA1477
Frequently Asked Questions
Which vehicles does this Dorman blower motor resistor kit fit?
It is a direct replacement for the 2005-2007 Jeep Grand Cherokee and 2006-2007 Jeep Commander. See the "Vehicles it fits" section for engine-level details.
What is included in the kit?
Each kit includes a blower motor resistor and a harness pigtail, so you can replace the connector along with the resistor.
What does a blower motor resistor do?
It sets the blower motor's speed by varying the current it receives. This gives you the fan settings you choose at the HVAC controls.
What are signs the blower motor resistor may need replacing?
The blower may work on only some speeds or not at all, or the resistor connector may be melted or corroded. Other HVAC faults cause similar symptoms, so diagnose the cause first.
Why replace the harness pigtail along with the resistor?
Most repairs need the harness pigtail. If the original connector has overheated or corroded, the new pigtail gives the new resistor a fresh connection.
