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Dorman 973-558 HVAC Blower Motor Resistor Kit
| Brand | Dorman 973-558 |
|---|---|
| Connector Gender | Female |
| Connector Quantity | 1 |
| Gasket or Seal Included | No |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 3 |
| Package Contents | 1 Blower Motor Resistor; 1 Wire Harness |
| Terminal Gender | Male |
| Terminal Quantity | 5 |
| Terminal Type | Blade |
| Wire Quantity | 5 |
| Wiring Harness Included | Yes |
| Wiring Harness Length | 6 |
| Fits | Ford and Lincoln · 22 vehicles |
Resistor kit. Includes a resistor and harness pigtail for a complete electrical repair.
Harness included. Comes with a wire harness pigtail for easier replacement of damaged connections.
Blade terminals. Female connector and male terminals provide a secure electrical connection.
Cross-references 4P1591, 7L1Z19A706A and JA1714 for the same application. See all 5.
Dorman 973-558 HVAC Blower Motor Resistor Kit
Dorman 973-558 is an HVAC blower motor resistor kit that replaces a failed original resistor and includes the matching harness pigtail. It is built for vehicles where the factory resistor has overheated, corroded, or damaged the connector, restoring proper blower motor speed control.
Key Features
- Direct replacement blower motor resistor kit for HVAC electrical repair
- Includes a replacement wire harness pigtail for damaged or heat-affected connectors
- Female connector with male blade terminals for the specified application
- 5-wire harness layout with a 6-inch harness length
- 3 mounting holes for OE-style installation
- Fits 2007-2017 Ford Expedition auxiliary unit applications with connector
- Fits 2007-2017 Lincoln Navigator auxiliary unit applications with connector
Detailed Description
This Dorman blower motor resistor kit is made for HVAC systems that have lost one or more fan speeds due to resistor failure or connector damage. The included harness pigtail addresses common heat-related wiring issues at the resistor connector, helping restore reliable electrical contact in the blower motor circuit. It is a practical replacement for Ford Expedition and Lincoln Navigator auxiliary unit applications, and the Dorman 973-558 part number is commonly searched for this repair.
This part cross-references 7L1Z19A706A and RU634 for the same application.
Common Problems It Can Solve
- Blower motor only works on certain speeds
- No airflow from the HVAC blower on selected settings
- Intermittent fan operation caused by a failing resistor
- Heat-damaged or corroded resistor connector
- Electrical resistance issues in the blower motor control circuit
Installation Notes and Tips
Verify the vehicle uses the auxiliary unit configuration listed in the fitment data before installation. Inspect the blower motor connector, wiring, and resistor mounting area for heat damage or corrosion, and replace any compromised terminals or wiring before reconnecting the new resistor kit. Confirm the connector orientation and mounting hole alignment match the original part.
Quality Assurance
Dorman supplies replacement electrical components engineered to match the original service function for the listed applications. The 973-558 kit is intended to restore blower motor speed control on compatible Ford Expedition and Lincoln Navigator HVAC systems.
| Year | Make | Model | Wheel Base | Position | Notes |
|---|---|---|---|---|---|
| 2017 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2017 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2016 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2016 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2015 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2015 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2014 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2014 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2013 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2013 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2012 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2012 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2011 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2011 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2010 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2010 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2009 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2009 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2008 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2008 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2007 | Ford | Expedition | 131.0" | N/A | Auxiliary Unit; Includes Connector |
| 2007 | Lincoln | Navigator | 131.0" | N/A | Auxiliary Unit; Includes Connector |
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