Dorman 973-108 HVAC Blower Motor Resistor

Overview of Dorman HVAC Blower Motor Resistor 973-108

The Dorman HVAC Blower Motor Resistor 973-108 is designed to regulate the blower motor speed in select BMW models. This component ensures proper airflow control within the vehicle's heating and cooling system, maintaining comfort and functionality.

• Compatible with multiple BMW models including 528i, 535i, 550i, 640i, 740i, and M series
• Features 2 bolt holes for secure mounting
• Equipped with 2 rectangular and square female connectors
• Includes 2 male blade terminals for reliable electrical connection
• Does not include wiring harness or mounting hardware
• Package contains one blower motor resistor unit

Detailed Product Description

The Dorman 973-108 blower motor resistor is engineered to fit a wide range of BMW vehicles such as the 528i xDrive, 535i GT, 550i GT xDrive, 640i Gran Coupe, 740Li xDrive, and M5 models. It features two bolt holes for straightforward installation and secure attachment within the HVAC system. The resistor uses blade-type terminals with a combination of rectangular and square female connectors, ensuring compatibility with the vehicle’s existing wiring harness. This part does not come with additional wiring harnesses or mounting hardware, so those components must be reused or sourced separately.

Common Applications and Issues Resolved

• Restores proper blower motor speed control in BMW HVAC systems
• Eliminates blower motor failure to operate at certain speeds
• Fixes inconsistent airflow or blower motor stuck on one speed
• Addresses overheating or electrical resistance issues in the blower circuit
• Resolves intermittent blower motor operation in BMW 528i, 535i, 550i, 640i, and 740i models

Installation Notes and Tips

• Verify compatibility with your specific BMW model and year before installation
• Ensure the vehicle’s battery is disconnected to prevent electrical shorts
• Retain original mounting hardware or acquire appropriate replacements as none are included
• Inspect connectors for corrosion or damage prior to installation
• Follow manufacturer torque specifications when securing the resistor with the two bolt holes

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 973-108 blower motor resistor undergoes quality control testing to ensure reliable performance in BMW HVAC systems. Warranty coverage details should be confirmed at the time of purchase, as they may vary by distributor or region.