Dorman 973-103 HVAC Blower Motor Resistor - Center or Rear

Reliable HVAC Blower Motor Resistor for Mercedes-Benz Models

The Dorman 973-103 HVAC blower motor resistor is designed to restore proper blower motor function in select Mercedes-Benz vehicles. Engineered to meet OEM specifications, this resistor ensures consistent airflow control for your vehicle's heating and cooling system.

• Compatible with Mercedes-Benz C55 AMG, C230, C240, C280, C320, C350, CLK55 AMG, CLK320, CLK500, ML55 AMG, ML320, ML350, ML500, S55 AMG, S63 AMG, S65 AMG, S350, S400, S430, S450, S500, S550, and S600 models
• Part number 973-103 for precise identification and fitment
• Features 2 bolt holes for secure mounting
• Includes 1 rectangular female connector with 5 male blade terminals
• Does not include wiring harness or mounting hardware

Product Details and Specifications

This HVAC blower motor resistor from Dorman is designed with a rectangular female connector housing five male blade terminals, ensuring reliable electrical connections within the blower motor circuit. The resistor mounts securely using two bolt holes, providing stable installation in the HVAC system. While the wiring harness and mounting hardware are not included, the resistor is compatible with factory connectors, simplifying replacement in the listed Mercedes-Benz models.

Common Applications and Problem Resolution

This blower motor resistor is used to regulate the speed of the HVAC blower motor, allowing for multiple fan speed settings. It is a critical component in maintaining proper climate control inside your vehicle.

• Resolves blower motor fan speeds stuck on high or low
• Fixes intermittent or non-functioning blower motor speeds
• Eliminates inconsistent airflow from HVAC vents
• Addresses electrical resistance failures causing blower motor issues

Installation Notes and Tips

Installation requires removal of the HVAC blower motor housing to access the resistor. Ensure the vehicle's battery is disconnected before beginning to prevent electrical shorts. Verify connector compatibility and secure the resistor using the two bolt holes. Since mounting hardware and wiring harness are not included, retain original components or source replacements as needed.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 973-103 blower motor resistor undergoes rigorous quality control to ensure durability and reliable performance. Warranty coverage details should be confirmed at the point of purchase.