Dorman 984-591 HVAC Blower Motor Resistor

Dorman 984-591 HVAC Blower Motor Resistor

Restore proper cabin airflow control with this direct replacement blower motor resistor from Dorman. It is built to match original equipment operation and performance on select Mazda applications, including Mazda 3, Mazda 3 Sport, Mazda 6, and CX-3 models.

Key Features

• Direct replacement HVAC blower motor resistor for select Mazda vehicles
• Matches OE-style operation and performance
• Rectangular connector with 5 terminals
• Female connector and male terminal design
• Wiring harness not included
• Package contents: blower motor resistor and instructions

Detailed Description

Dorman 984-591 is an HVAC blower motor resistor designed for vehicles that use a 5-terminal, rectangular connector layout. It is a direct replacement for the original resistor on select 2014-2018 Mazda 3 and Mazda 3 Sport models, as well as 2016-2020 Mazda 6 and Mazda CX-3 applications without a harness. This part cross-references Standard Ignition RU978 for the same application.

Common Problems It Can Solve

• Blower motor only works on certain fan speeds
• No cabin airflow from the HVAC system
• Intermittent heater or A/C blower operation
• Burnt or failed blower motor resistor
• Poor control of heating and cooling fan output

Installation Notes and Tips

Verify connector style, terminal count, and vehicle fitment before installation. This part is listed for Mazda 3, Mazda 3 Sport, Mazda 6, and CX-3 applications without a harness. Follow the included instructions and inspect the blower motor connector and surrounding HVAC components for heat damage before replacing the resistor.

Quality Assurance

Dorman manufactures this resistor as an OE-style replacement for the specified applications, with fitment and function aligned to original equipment requirements.