Four Seasons 73045 HVAC Recirculation Door Actuator

Four Seasons 73045 Air Door Actuator

The Four Seasons Air Door Actuator, part number 73045, is a replacement HVAC recirculation door actuator for vehicles with manual or dual-zone climate control configurations. It helps control air door movement inside the HVAC case so the system can direct airflow as intended in Ford, Lincoln, Mazda, and Mercury applications.

Key Features

• HVAC air door actuator for recirculation door operation
• Male door linkage for direct connection to the door mechanism
• 3 mounting ears for secure installation
• 5-terminal pin electrical connection
• Four Seasons 73045 replacement for select Ford F-150, Escape, Expedition, Navigator, and related models

Application Details

Compatible With 2004-2005 Ford F-150 and 2004 Ford F-150 Heritage in floor/defrost and panel positions through 11/04, plus 2007-2017 Ford Escape, 2008-2012 Ford Escape left main and right main dual-zone applications, 2005-2008 Ford Escape auxiliary battery cooling, 2009 Ford F-250 Super Duty and F-350 Super Duty, 2008 Ford F-250 Super Duty left main and right main, 2008 Ford F-350 Super Duty left main and right main, 2011-2014 Ford F-150, 2015-2017 Ford Expedition, 2015-2017 Lincoln Navigator, 2011-2014 Lincoln Mark LT, 2006-2011 Mercury Mariner, 2008-2011 Mercury Mariner left main and right main, 2006-2008 Mercury Mariner auxiliary battery cooling, 2008-2011 Mazda Tribute left main and right main, and 2008 Mazda Tribute auxiliary battery cooling. This part number, 73045, also cross-references Dayco 73045 for the same application.

What It Helps Fix

• HVAC recirculation door that stays stuck in one position
• Incorrect airflow routing between panel, floor, and defrost outlets
• Temperature or air distribution issues caused by a failed actuator
• Clicking or repeated movement from a worn HVAC door actuator
• Loss of recirculation control in select Ford, Lincoln, Mazda, and Mercury vehicles

Installation Notes and Tips

Verify the original actuator style, terminal count, mounting ear layout, and door linkage before installation. Match the vehicle position shown in the fitment data, especially on dual-zone left main and right main applications. After installation, cycle the HVAC controls to confirm the recirculation door moves smoothly and the system responds correctly.

Quality Assurance

Four Seasons supplies HVAC replacement components for service applications, and this actuator is built to match the listed OE-style fitment requirements for the vehicles shown above. Confirm part number 73045 against the original unit and vehicle configuration before ordering.