Dorman 973-528 HVAC Blower Motor Resistor Kit

BMW HVAC Blower Motor Resistor Kit

Dorman 973-528 is an HVAC blower motor resistor kit for BMW models that use a 5-wire, blade-terminal connector. It replaces an overheated or corroded original resistor and includes the resistor and harness pigtail needed to restore blower speed control.

Key Features

• HVAC blower motor resistor kit with resistor and wire harness
• 5-wire, blade-terminal design with female connector and male terminals
• 6-inch wiring harness length for connector repair
• 2 mounting holes for OE-style installation points
• Direct replacement for BMW HVAC blower resistor service
• Part number 973-528 for application lookup and ordering

Detailed Description

This Dorman blower motor resistor kit is built for BMW HVAC systems that lose fan speed control because the original resistor has overheated, corroded, or failed at the connector. It is a practical repair for BMW X3, X5, 325i, 330i, 528i, M3, and other listed applications where the resistor and pigtail connection need to be serviced together. Dorman 973-528 helps restore proper blower motor operation by replacing the damaged electrical interface at the resistor location.

This part cross-references URO 64116923204 for the same application.

What It Helps Fix

• Blower motor stuck on one speed
• Intermittent HVAC fan operation
• Noisy or inconsistent cabin airflow control
• Heat-damaged resistor connector terminals
• Corrosion at the blower resistor harness connection

Installation Notes and Tips

Verify connector style, terminal count, and vehicle application before installation. This kit uses a female connector with male blade terminals and a 5-wire layout, so matching the OE plug is important for proper fitment. Inspect the blower motor connector and surrounding HVAC wiring for heat damage before installing the new resistor and harness. Compatible With 2004-2010 BMW X3, 2000-2006 BMW X5, 2001-2006 BMW 325Ci, 2001-2006 BMW 330Ci, 2001-2006 BMW M3, 1996-2000 BMW 328i, and other listed BMW applications.

Quality Assurance

Dorman supplies replacement electrical and HVAC service parts for vehicle repair applications. This kit is engineered as a service replacement for the original blower motor resistor assembly and connector repair point on the listed BMW models.