Dorman 973-421 HVAC Blower Motor Resistor Kit
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Dorman

Dorman 973-421 HVAC Blower Motor Resistor Kit

Brand Dorman 973-421
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 Dodge and Jeep · 34 vehicles

Resistor kit. Includes a resistor and harness pigtail for a complete electrical repair.

Direct replacement. Replaces an overheated or corroded original equipment resistor.

Harness included. Comes with a wire harness pigtail for easier installation.

Cross-references 3A1049, 4720278 and CR153 for the same application. See all 6.

$49.57Free shipping
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Dorman 973-421 HVAC Blower Motor Resistor Kit

Dorman 973-421 is an HVAC blower motor resistor kit that replaces an overheated or corroded original resistor on select Dodge and Jeep applications. It includes the resistor and a harness pigtail to restore blower speed control when the factory connector has heat damage or corrosion.

Key Features

  • Direct replacement blower motor resistor kit for select HVAC systems
  • Includes a replacement wire harness pigtail for damaged connector repair
  • 4-wire, 4-terminal design with blade terminals and female connector
  • 6-inch wiring harness length for connector-side repair
  • 2 mounting holes for OE-style installation points
  • Package contents: blower motor resistor and wire harness

Detailed Description

This Dorman HVAC blower motor resistor kit is built for vehicles where the original resistor has failed from heat buildup or the connector has become corroded. It is a practical repair for blower speed issues on Dodge Ram 1500, Dodge Ram 2500, Dodge Ram 3500, and Jeep Grand Cherokee applications, including 1993 Jeep Grand Wagoneer. Part number 973-421 is also a useful reference when searching for a blower motor resistor kit with connector repair for these vehicles.

Compatible With 1994-2002 Dodge Ram 2500, 1994-2002 Dodge Ram 3500, 1994-2001 Dodge Ram 1500, 1994-1999 Jeep Grand Cherokee, 1993 Jeep Grand Cherokee, and 1993 Jeep Grand Wagoneer. This part cross-references Monroe Shocks & Struts (e.g., RU109, RU876) for the same application.

What It Helps Fix

  • Blower motor only working on certain fan speeds
  • No cabin airflow from a failed resistor circuit
  • Intermittent HVAC fan operation caused by heat-damaged terminals
  • Corroded or melted blower resistor connector
  • Loss of proper blower speed control in the HVAC system

Installation Notes and Tips

Verify connector style, terminal count, and vehicle fitment before installation. This kit uses a female connector with male blade terminals and does not include mounting hardware or a gasket/seal. For best results, inspect the blower motor connector and surrounding wiring for heat damage before replacing the resistor.

Quality Assurance

Dorman supplies this resistor kit as a replacement solution for overheated or corroded original equipment parts. The design combines the resistor and harness pigtail to address both the failed component and the damaged connector in one repair.

This part fits 34 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2002DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
2002DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
2001DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
2001DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
2001DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
2000DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
2000DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
2000DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
1999DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
1999DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
1999DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
1999JeepGrand CherokeeN/AIncludes Connector; Exc. Climate Control
1998DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
1998DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
1998DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
1998JeepGrand CherokeeN/AIncludes Connector; Exc. Climate Control
1997DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
1997DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
1997DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
1997JeepGrand CherokeeN/AIncludes Connector; Exc. Climate Control
1996DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
1996DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
1996DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
1996JeepGrand CherokeeN/AIncludes Connector; Exc. Climate Control
1995DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
1995DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
1995DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
1995JeepGrand CherokeeN/AIncludes Connector; Exc. Climate Control
1994DodgeRam 1500N/ABlower Motor Resistor Kit includes Connector.
1994DodgeRam 2500N/ABlower Motor Resistor Kit includes Connector.
1994DodgeRam 3500N/ABlower Motor Resistor Kit includes Connector.
1994JeepGrand CherokeeN/AIncludes Connector; Exc. Climate Control
1993JeepGrand CherokeeN/ABlower Motor Resistor Kit includes Connector.
1993JeepGrand WagoneerN/ABlower Motor Resistor Kit includes Connector.
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
3A10494720278CR153RU109RU109TRU876