Four Seasons 73644 HVAC Mode Door Actuator

HVAC Mode Door Actuator for Honda

Restore proper air distribution in the cabin with the Four Seasons 73644 HVAC mode door actuator. This HVAC air door actuator uses a 5-terminal pin layout, an arm-style door linkage, and a 3-ear mounting design for direct replacement service on supported Honda applications.

Compatible with 2000-2006 Honda Insight and 1997-2001 Honda CR-V with ATC (Automatic Temperature Control), this Four Seasons 73644 part is built for vehicles that need accurate mode door movement for dash vent control.

Key Features

• Four Seasons HVAC mode door actuator, part number 73644
• Arm-style door linkage for HVAC air door operation
• 3 mounting ears for secure installation
• 5-terminal pin electrical connection
• Direct-fit replacement for select Honda Insight and Honda CR-V applications
• Cross-references Monroe Shocks & Struts 172286 and 182286 for the same application

Detailed Description

The Four Seasons 73644 HVAC mode door actuator controls the movement of the mode door inside the heating and air conditioning system, directing airflow to the proper cabin outlets. Four Seasons backs this component with more than 50 years of mobile A/C experience and tests its products for long-term, trouble-free operation. For Honda Insight and Honda CR-V models with automatic temperature control, this actuator is a practical replacement when the original unit no longer responds correctly.

Use Four Seasons 73644 when servicing HVAC systems on 2000-2006 Honda Insight or 1997-2001 Honda CR-V with ATC. The actuator’s arm linkage, 3-ear mounting pattern, and 5-pin terminal design support accurate fitment in the intended HVAC housing.

Common Problems This Part Can Address

• Airflow stuck at one vent setting
• Inconsistent switching between defrost, panel, and floor modes
• HVAC mode door movement failure
• Loss of proper cabin air direction control
• Faulty actuator response in ATC-equipped Honda HVAC systems

Installation Notes and Tips

Verify the existing actuator connector, mounting ear layout, and linkage style before installation. On 1997-2001 Honda CR-V models, confirm ATC equipment is present. After installation, cycle the HVAC controls to confirm the mode door moves through each setting and the airflow changes correctly.

Quality Assurance

Four Seasons engineers and tests this HVAC actuator for dependable operation, drawing on over 50 years of mobile air conditioning experience. Part number 73644 is built as a service replacement for the listed Honda applications.