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Dorman 973-428 HVAC Blower Motor Resistor Kit
| Brand | Dorman 973-428 |
|---|---|
| Connector Gender | Female |
| Connector Quantity | 1 |
| Gasket or Seal Included | No |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Package Contents | 1 Blower Motor Resistor; 1 Wire Harness |
| Terminal Gender | Male |
| Terminal Quantity | 4 |
| Terminal Type | Blade |
| Wire Quantity | 4 |
| Wiring Harness Included | Yes |
| Wiring Harness Length | 6 |
| Fits | Jeep · 5 vehicles |
Resistor kit. Includes a resistor and harness pigtail for a complete repair.
Wiring harness included. Comes with a 6-inch pigtail and blade terminals for easier connection.
Direct replacement. Replaces an overheated or corroded original equipment resistor.
Cross-references 4P1339, 5143127AA and JA1477 for the same application. See all 5.
Dorman 973-428 HVAC Blower Motor Resistor Kit
Dorman 973-428 is an HVAC blower motor resistor kit for select Jeep applications. It includes a replacement resistor and wire harness pigtail to address blower speed control issues caused by heat damage or corrosion at the original connector.
Key Features
- Includes a blower motor resistor and wire harness for a complete electrical repair at the connector point
- Uses a 4-wire, 4-terminal design with blade terminals and a female connector
- Harness length measures 6 inches for serviceable routing and connection
- Mounts with 2 holes and uses a male terminal interface on the resistor side
- Direct replacement for select Jeep Commander and Jeep Grand Cherokee HVAC systems
Detailed Description
This Dorman blower motor resistor kit is built for HVAC systems that have lost blower speed control due to an overheated resistor or a corroded connector. The included harness pigtail helps restore the electrical connection at the resistor location, making it a practical repair for Jeep Commander and Jeep Grand Cherokee models with manual climate control. This part cross-references OE-style numbers such as 5143127AA and RU488 for the same application. Dorman 973-428 is a focused replacement for vehicles where the original resistor and connector have been heat stressed or damaged.
Common Repair Symptoms
- Blower motor works on only one speed
- Intermittent HVAC fan operation
- No airflow from the vents despite a functioning blower motor
- Melted, overheated, or corroded resistor connector
- Loss of cabin fan control in Jeep Commander or Jeep Grand Cherokee HVAC systems
Installation Notes and Tips
Fits 2007 Jeep Commander, N/A; Includes Connector; Exc. Climate Control; To 6/05/06. Fits 2007 Jeep Grand Cherokee, N/A; Includes Connector; Exc. Climate Control; To 6/05/06. Fits 2006 Jeep Commander, N/A; Includes Connector; Exc. Climate Control. Fits 2005-2006 Jeep Grand Cherokee, N/A; Includes Connector; Exc. Climate Control. Verify the connector style, mounting points, and climate control configuration before installation. Inspect the blower motor connector and surrounding wiring for heat damage so the repair addresses the full fault area.
Quality Assurance
Dorman replacement parts are engineered for direct-fit service on listed applications and are built to replace the original resistor and harness connection point on compatible Jeep HVAC systems.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2007 | Jeep | Commander | N/A | Includes Connector; Exc. Climate Control; To 6/05/06 |
| 2007 | Jeep | Grand Cherokee | N/A | Includes Connector; Exc. Climate Control; To 6/05/06 |
| 2006 | Jeep | Commander | N/A | Includes Connector; Exc. Climate Control |
| 2006 | Jeep | Grand Cherokee | N/A | Includes Connector; Exc. Climate Control |
| 2005 | Jeep | Grand Cherokee | N/A | Includes Connector; Exc. Climate Control |
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