Dorman 604-280 HVAC Blend Door Actuator - Lower Main, Main or Upper Main

Dorman 604-280 HVAC Blend Door Actuator

This HVAC blend door actuator is built for temperature control performance on select Ford Super Duty trucks. Dorman 604-280 is engineered to match the quality and function of the original actuator on specific applications, helping restore proper cabin air temperature control.

Key Features

• Rotary switch activation type for blend door movement
• Plastic housing for OE-style fit and function
• Direct replacement HVAC heater blend door actuator
• Matches original performance on select Ford F-250 Super Duty, F-350, and F-350 Super Duty applications
• Cross-reference: Four Seasons 73074

Detailed Description

Dorman 604-280 is a replacement HVAC blend door actuator for temperature control systems in 2011-2016 Ford F-250 Super Duty, Ford F-350, and Ford F-350 Super Duty models. It is designed for the lower main, main, and upper main positions listed in the fitment data, with coverage for vehicles equipped with dual zone automatic temperature control, manual temperature control, and applications with or without air conditioning. This part number, 604-280, is intended to restore the movement of the blend door so the HVAC system can direct heated or cooled air correctly.

This part cross-references Four Seasons 73074 for the same application.

What It Helps Fix

• Cabin air stuck too hot or too cold
• Temperature changes that do not respond to HVAC controls
• Inconsistent air mix between heat and A/C settings
• Blend door movement problems in the HVAC housing
• Loss of proper temperature control in Ford F-250 Super Duty and Ford F-350 trucks

Installation Notes and Tips

Verify the actuator position before ordering, since fitment varies by lower main, main, and upper main locations. Confirm the vehicle’s HVAC configuration, including dual zone automatic temperature control, manual temperature control, and air conditioning equipment, against the fitment notes. Compare the connector, mounting points, and original part number 604-280 before installation.

Quality Assurance

Dorman states this HVAC heater blend door actuator is precision-engineered to match the quality and performance of the original actuator on specific vehicle years, makes, and models. That OE-style approach supports consistent operation in the listed Ford Super Duty applications.