Four Seasons 73508 HVAC Recirculation Door Actuator

Four Seasons 73508 Air Door Actuator

The Four Seasons 73508 HVAC recirculation door actuator controls the air door movement inside the climate system for precise airflow direction. Built as an HVAC air door actuator with gear linkage, it is used on select Volkswagen Passat and Volkswagen Beetle applications with single-zone climate control.

Key Features

• Brand: Four Seasons Air Door Actuator line
• Part number: 73508
• Gear-style door linkage for HVAC air door operation
• 3 mounting ears for secure installation
• 2-terminal pin electrical connection
• Direct-fit recirculation door actuator for select Volkswagen HVAC systems

Product Details

Four Seasons 73508 is an HVAC recirculation door actuator used to move the air door that directs cabin airflow through the heating and air conditioning system. This actuator is specified for 2022 Volkswagen Passat and 2012-2021 Volkswagen Passat models without dual climate control, as well as 2012-2019 Volkswagen Beetle models without dual climate control. The gear linkage design and 3-ear mounting layout support proper alignment in the HVAC housing. This part cross-references 604817 for the same application.

Common Problems This Part Can Address

• Recirculation door stuck in one position
• Incorrect airflow routing through the HVAC system
• Loss of cabin air recirculation control
• Clicking or binding from a worn actuator gear
• Temperature or airflow distribution issues tied to door movement

Installation Notes and Tips

Verify the vehicle has no dual climate control before ordering. Match the connector style, mounting ear layout, and gear linkage to the original actuator before installation. After replacement, cycle the HVAC controls to confirm smooth door movement and proper recirculation operation on the Volkswagen Passat or Volkswagen Beetle application.

Quality Assurance

Four Seasons HVAC components are built for replacement use in climate control systems and are identified by OE-style part numbering for accurate application matching. Confirm fitment by year, make, model, and HVAC configuration before installation.