Dorman 973-101 HVAC Blower Motor Resistor - Front

Mercedes-Benz HVAC Blower Motor Resistor

Restore proper cabin airflow control with this Dorman HVAC blower motor resistor, Part Number 973-101. It is a direct replacement for the original resistor on select Mercedes-Benz models and is built to match OE operation and performance for front HVAC systems.

• Direct replacement blower motor resistor for select Mercedes-Benz front HVAC applications
• Designed to restore correct blower speed control after resistor failure
• Square female connector with 4 male blade terminals
• 2 bolt holes for mounting
• No wiring harness included
• No mounting hardware included
• Package contents: 1 blower motor resistor

Detailed Product Overview

Dorman 973-101 is an HVAC blower motor resistor engineered for vehicles that have lost one or more fan speeds or have inconsistent blower operation. It is built to match the function of the original equipment resistor, helping restore heating and cooling performance in the cabin. This part cross-references URO 1408218351 for the same application.

Compatible With select Mercedes-Benz applications including 1992-1993 Mercedes-Benz 300SD, front; 1992-1993 Mercedes-Benz 300SE, front; 1992-1993 Mercedes-Benz 500SEL, front; 1992-1993 Mercedes-Benz 600SEL, front; 1992 Mercedes-Benz 400SE, front; 1993 Mercedes-Benz 400SEL, front; 1993 Mercedes-Benz 500SEC, front; 1993 Mercedes-Benz 600SEC, front; 1994-1999 Mercedes-Benz S320, front; 1994-1999 Mercedes-Benz S420, front; 1994-1999 Mercedes-Benz S600, front; 1994-1997 Mercedes-Benz S500, front; 1994-1995 Mercedes-Benz S350, front; 1998-1999 Mercedes-Benz CL500, front; and 1998-1999 Mercedes-Benz CL600, front.

Common Problems This Part Can Address

• Blower motor stuck on one speed
• Loss of low, medium, or high fan settings
• Intermittent cabin fan operation
• Weak or uneven HVAC airflow
• Heating and cooling performance affected by resistor failure

Installation Notes and Tips

Before installation, confirm the connector style, terminal count, and mounting points match the original resistor. Inspect the blower motor connector and surrounding wiring for heat damage, since a failed resistor can leave signs of excess current or corrosion. This part uses a square female connector with 4 male blade terminals and mounts with 2 bolt holes.

Quality Assurance

Dorman manufactures this replacement resistor to follow the operation and performance of the original equipment on the listed Mercedes-Benz applications. Part Number 973-101 is intended for front HVAC use on the confirmed fitment list above.