Dorman 604-457 Air Recirculation Door Actuator

The Dorman 604-457 is a direct-fit air recirculation door actuator designed to restore proper HVAC air source control to your vehicle. This actuator controls the recirculation flap inside the HVAC housing, allowing the system to switch between drawing in fresh outside air and recirculating cabin air — a critical function for efficient heating, cooling, and defog performance.

Dorman engineers this replacement to meet or exceed original equipment specifications, ensuring a plug-and-play installation with no cutting, splicing, or modifications required. The unit is built with durable internal gearing and a precision motor to deliver reliable, long-lasting operation and eliminate common failure symptoms such as stuck doors, unusual clicking or grinding noises, and loss of recirculation control.

Key Features:

• Replaces the OE air recirculation door actuator
• Direct-fit, plug-and-play installation — no modification required
• Precision motor and durable gear set for long service life
• Restores proper switching between fresh air and recirculated cabin air
• Eliminates clicking, grinding, or stuck air door symptoms
• Manufactured to meet or exceed OE performance standards
• Dorman Part Number: 604-457

Dorman Products is a leading supplier of OE-quality replacement automotive parts, trusted by professional technicians and DIY enthusiasts alike. The 604-457 is part of Dorman's extensive HVAC actuator line, engineered for a precise fit and reliable performance.