Dorman 604-003 HVAC Blend Door Actuator - Auxiliary or Main

OE-Style HVAC Blend Door Actuator

Dorman 604-003 is a rotary HVAC blend door actuator engineered to match the fit and function of the original heater blend door actuator on select Chrysler and Dodge vehicles. It is built with a plastic housing and is intended for direct replacement in Main and Auxiliary HVAC positions where listed.

For Chrysler Pacifica, Chrysler Town & Country, Chrysler Voyager, Dodge Caravan, Dodge Grand Caravan, Dodge Dakota, and Dodge Durango applications, this actuator helps restore proper temperature blend control across the cabin. The Dorman 604-003 part number is a direct-fit option for vehicles that need accurate HVAC door movement and consistent climate control response.

Key Features

• Rotary switch activation type for HVAC blend door operation
• Plastic construction for OE-style replacement fitment
• Direct replacement for the original blend door actuator on listed applications
• Compatible with Main and Auxiliary HVAC positions where specified
• Cross-references with 4885465AA and ADS4202 for the same application

Detailed Description

This HVAC heater blend door actuator is designed for specific 2001-2008 Chrysler and Dodge models, including Chrysler Pacifica, Chrysler Town & Country, Chrysler Voyager, Dodge Caravan, Dodge Grand Caravan, Dodge Dakota, and Dodge Durango. It controls the blend door movement that directs heated and cooled air through the HVAC system, helping the system respond correctly to temperature settings. If your vehicle has inconsistent cabin temperature control, clicking from the dash area, or a blend door that no longer responds as expected, Dorman 604-003 is the replacement part to check against the original unit.

What It Helps Fix

• Inconsistent cabin temperature output
• HVAC air that stays hot or cold regardless of setting
• Blend door movement that stops responding
• Clicking or repeated actuator noise from the HVAC case
• Loss of proper temperature mixing in Main or Auxiliary HVAC systems

Installation Notes and Tips

Verify the original actuator’s connector style, mounting location, and position before installation. This part uses a rotary activation design, so matching the replacement to the vehicle’s HVAC control setup is important. Confirm fitment for the exact year, make, model, and position listed for your Chrysler Pacifica, Chrysler Town & Country, Chrysler Voyager, Dodge Caravan, Dodge Grand Caravan, Dodge Dakota, or Dodge Durango.

Quality Assurance

Dorman manufactures this actuator as a precision-engineered replacement for the original blend door actuator on the listed vehicles. It is built to meet the quality and performance expectations of the OE-style application.