The HVAC Blend Door Actuator-Heater Blend Door Actuator by Dorman (OE Solutions) is a high-quality replacement part designed specifically for car and truck heating and ventilation systems. With the manufacturer part number 604-700, this HVAC vent actuator ensures precise control over the heater blend door, providing efficient and reliable operation for your vehicle. Trust in the Dorman brand to deliver durable and dependable automotive parts and accessories for all your maintenance and repair needs.