Dorman 604-231 HVAC Blend Door Actuator - Left Main, Main or Right Main

HVAC Blend Door Actuator for Ford and Mercury

Dorman 604-231 is a rotary HVAC blend door actuator built for temperature control in select Ford and Mercury vehicles. It is precision-engineered to match the quality and performance of the original actuator on specific applications, including Ford Mustang, Ford Five Hundred, Ford Freestyle, and Mercury Montego.

Key Features

• Rotary switch activation type for HVAC temperature blend control
• Plastic housing construction
• Direct replacement for the original blend door actuator on listed applications
• Fits main, left main, and right main HVAC positions depending on vehicle configuration
• Package contents: actuator
• Part number 604-231 for easy identification and ordering

Detailed Description

This Dorman HVAC blend door actuator is designed for temperature door control in the heating and air conditioning system. It helps regulate airflow through the HVAC box so the cabin temperature responds correctly to driver input. Compatible With 2005-2009 Ford Mustang, main; 2005-2007 Ford Five Hundred, left main, main, and right main; 2005-2007 Ford Freestyle, left main, main, and right main; and 2005-2007 Mercury Montego, left main, main, and right main. The 604-231 replacement is a practical choice when the original actuator no longer moves the blend door as commanded.

This part cross-references 5F9Z19E616EA and SK604231 for the same application.

What It Helps Fix

• Inconsistent cabin temperature from the HVAC vents
• Temperature stuck on hot or cold
• Clicking or repeated movement from the dash HVAC area
• Loss of proper blend door response in automatic or manual temperature control systems
• Uneven heating and cooling performance in Ford Mustang, Ford Five Hundred, Ford Freestyle, and Mercury Montego applications

Installation Notes and Tips

Verify the vehicle year, make, model, and HVAC position before installation. This actuator uses a rotary activation design, so confirm the replacement matches the original unit’s style and mounting location. After installation, cycle the ignition and HVAC controls to allow the system to relearn actuator position if required by the vehicle.

Quality Assurance

Dorman engineers this actuator to match the quality and performance of the original blend door actuator on the listed vehicles. The part number 604-231 is intended as a direct replacement for the specified HVAC applications.