Four Seasons 37533 HVAC Blend Door Actuator - Main

Four Seasons 37533 Air Door Actuator

The Four Seasons Air Door Actuator, part number 37533, is an HVAC blend door actuator built for vehicles that use electronic air door control. It is specified with a male door linkage, 4 mounting ears, and an 8-pin terminal layout for the listed applications. For Ford Explorer, Ford Explorer Sport Trac, and Mercury Mountaineer HVAC repair work, this actuator addresses temperature and airflow control at the blend door.

Key Features

• Four Seasons Air Door Actuator line for HVAC air door control
• Part number 37533 for direct reference during ordering and service lookup
• Male door linkage design
• 4 mounting ears for secure installation in the HVAC case
• 8-terminal pin configuration
• Used in main-position HVAC applications on select Ford and Mercury vehicles

Product Details

This HVAC blend door actuator is part of Four Seasons’ Air Door Actuator product line, which focuses on replacement components for cabin air distribution and temperature blend control. The 37533 actuator is listed for 2003-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, 2002-2010 Mercury Mountaineer, 2003-2006 Ford Expedition with manual HVAC control, and 2002 Ford Explorer built to 2/02. If you are searching for a Ford Explorer blend door actuator 37533 or a Mercury Mountaineer HVAC air door actuator, this part number is the key reference.

This part cross-references Autotecnica FD0613097 for the same application.

Common Repair Symptoms

• Inconsistent cabin temperature from the HVAC vents
• Airflow stuck on one temperature setting
• Blend door movement issues in the HVAC case
• Loss of proper air distribution control in the dash HVAC system
• Fault codes or actuator noise tied to the air door system

Installation Notes

Verify the connector style, mounting ear layout, and linkage type before installation. This actuator is listed for main-position applications, and some fitments note an ATC relay connector incompatibility with the HVAC blower motor resistor harness. Confirm the vehicle’s HVAC control type and match the application notes for your Ford Explorer, Ford Explorer Sport Trac, or Mercury Mountaineer before replacement.

Quality Assurance

Four Seasons supplies HVAC replacement parts under its Air Door Actuator line for service-focused repairs. Part number 37533 is cataloged with defined fitment, terminal count, mounting style, and linkage configuration to support accurate part matching.