Four Seasons 73788 HVAC Mode Door Actuator

HVAC Mode Door Actuator Overview

Four Seasons 73788 is an HVAC mode door actuator built for automatic temperature control systems. It uses a cam-style door linkage and a 7-pin terminal layout to control air door movement with the correct electrical interface.

Key Features

• Cam-style door linkage for HVAC air door operation
• 7-terminal electrical connection
• Four mounting ears for secure installation
• HVAC air door actuator style
• Four Seasons 73788 for direct part identification

Fitment Details

Compatible with 2005-2010 Subaru Outback, w/ ATC (Automatic Temperature Control).

Compatible with 2005-2009 Subaru Legacy, w/ ATC (Automatic Temperature Control).

This part cross-references FEL-PRO (e.g., 73788) for the same application.

What It Is Used For

• Restoring proper mode door movement in the HVAC system
• Correcting inconsistent airflow direction selection
• Addressing actuator-related clicking or failed door response
• Replacing a worn electrical actuator with the correct fitment

Installation Notes and Tips

Verify the vehicle is equipped with automatic temperature control before ordering. Match the connector style, mounting ear layout, and door linkage design to the original unit. Confirm the part number 73788 against the removed actuator and the vehicle's HVAC configuration.

Quality Assurance

Four Seasons states that its products are engineered and tested for long service life, backed by more than 50 years of mobile A/C experience. Use part number 73788 to confirm application accuracy before installation.