Dorman 604-273 HVAC Blend Door Actuator - Auxiliary

HVAC Blend Door Actuator for Ford and Lincoln

Dorman 604-273 is an HVAC heater blend door actuator built for specific Ford and Lincoln applications with auxiliary position fitment. It uses a rotary activation design and a plastic housing to match the original actuator style on the listed vehicles. This Dorman 604-273 replacement is a direct-fit option for temperature or mode control service on select Expedition, Navigator, and Excursion models.

Key Features

• Rotary switch activation for HVAC blend door control
• Plastic construction for OE-style fit and function
• Matches the original actuator design on listed applications
• Fits auxiliary HVAC positions on select Ford and Lincoln vehicles
• Cross-references Four Seasons 73068 for the same application

Detailed Description

This HVAC blend door actuator is precision-engineered to match the quality and performance of the original unit on specific vehicle years, makes, and models. It is used in auxiliary HVAC systems where the actuator controls air temperature or mode selection by moving the blend door inside the heater box. Compatible With 1998-2005 Ford Expedition, auxiliary; 1998-2001 Lincoln Navigator, auxiliary; 2002 Ford Expedition, auxiliary; 2002 Lincoln Navigator, auxiliary; and 2000-2005 Ford Excursion, auxiliary. The Dorman 604-273 is a practical replacement when the original actuator no longer responds correctly or the HVAC system no longer directs air as expected.

What This Part Helps Fix

• Incorrect cabin air temperature from the auxiliary HVAC system
• Airflow stuck on one vent or outlet setting
• Blend door movement that is slow, erratic, or unresponsive
• HVAC clicking or actuator noise from a worn internal mechanism
• Loss of temperature control in the rear or auxiliary heater box

Installation Notes and Tips

Verify the vehicle year, make, model, and auxiliary position before ordering. This part number 604-273 is listed for both temperature and mode applications on certain Expedition and Navigator configurations, so confirm the original actuator location and function before replacement. Inspect the blend door and HVAC connector condition during service to avoid repeat failure.

Quality Assurance

Dorman engineers this actuator to align with the original part’s fit and operating characteristics on the specified applications. The design follows OE-style replacement standards for the listed Ford and Lincoln HVAC systems.