Dorman 604-813 HVAC Blend Door Actuator - Main

HVAC Blend Door Actuator for Mazda 6

This Dorman HVAC blend door actuator is built for 2009-2013 Mazda 6 models with main HVAC mode selection. It uses a rotary switch activation design and a plastic housing to match the original actuator’s function and fit. Part number 604-813 is a direct replacement option for restoring cabin air direction control.

Key Features

• Rotary switch activation for HVAC blend door control
• Plastic construction for OE-style replacement fit
• Matches the original actuator’s role in the HVAC system
• Fits 2009-2013 Mazda 6, Main
• Part number 604-813 for easy identification

Detailed Description

Dorman 604-813 is an HVAC heater blend door actuator engineered to match the quality and performance of the original unit on specific vehicles. In 2009-2013 Mazda 6 applications, it controls the HVAC blend door function used for mode selection in the box assembly, helping the system direct airflow where it is needed. This part cross-references Standard Ignition ADR4315 for the same application.

For buyers searching for a Mazda 6 HVAC blend door actuator, 604-813 provides a focused replacement for the main actuator position. It is also referenced by interchange numbers ADA346, ADS4315, and GS3L61A70.

What It Helps Fix

• Incorrect airflow direction from dash vents, floor vents, or defrost outlets
• HVAC mode changes that do not respond properly
• Temperature or air distribution issues caused by a failed actuator
• Clicking or repetitive movement from a worn blend door actuator
• Loss of cabin comfort control in the Mazda 6 HVAC system

Installation Notes and Tips

Verify the vehicle year, make, model, and main position before ordering. Confirm the connector style and actuator location against the original part, and inspect the HVAC door movement after installation to ensure proper mode selection. For search accuracy, this part is commonly listed as a 2009-2013 Mazda 6 HVAC blend door actuator and as Dorman 604-813.

Quality Assurance

Dorman states that this actuator is precision-engineered to match the quality and performance of the original blend door actuator on the listed applications. That OE-style focus supports consistent fit and function for replacement service.