Four Seasons 73427 HVAC Mode Door Actuator

Four Seasons 73427 HVAC Air Door Actuator

The Four Seasons 73427 HVAC mode door actuator restores control of air distribution inside the cabin. It is built with a male door linkage, 4 mounting ears, and a 7-terminal pin layout for a direct-fit replacement on select Honda Civic applications.

Compatible with 2006-2011 Honda Civic HVAC systems, this Four Seasons Air Door Actuator is used to move the mode door so airflow can be directed to the dash vents, floor outlets, or defrost outlets as commanded by the climate control system.

Key Features

• Four Seasons Air Door Actuator, part number 73427
• HVAC mode door actuator for cabin airflow control
• Male door linkage for the specified application
• 4 mounting ears for secure installation alignment
• 7-terminal pin electrical connection
• Fits 2006-2011 Honda Civic, N/A

Product Details

The Four Seasons 73427 is an HVAC air door actuator used in the climate control system to position the mode door. When the actuator responds correctly, the system can route air to the selected outlet based on driver input. This part cross-references ATE 604879 for the same application. For buyers searching for a Honda Civic HVAC mode door actuator or a 2006-2011 Honda Civic air door actuator, this part number provides a direct reference point for fitment verification.

Common Problems This Part Can Address

• Airflow stuck at one vent setting
• No response when switching between dash, floor, and defrost modes
• Clicking or inconsistent movement from the HVAC mode door area
• Incorrect air distribution inside the cabin
• Climate control commands not matching outlet selection

Installation Notes

Verify connector style, linkage type, mounting ear layout, and vehicle fitment before installation. On 2006-2011 Honda Civic models, access to the actuator is typically through the HVAC housing area, so confirm the original actuator location and electrical connection before removal. After installation, cycle the HVAC controls to confirm smooth mode door movement and proper airflow direction.

Quality Assurance

Four Seasons supplies HVAC replacement components for service applications, and part number 73427 is cataloged for the specified Honda Civic fitment. Use the vehicle year, make, model, and actuator configuration to confirm application match before purchase.