Four Seasons 73630 HVAC Mode Door Actuator

HVAC Mode Door Actuator for Subaru Climate Control

Four Seasons 73630 is an HVAC mode door actuator built for Subaru vehicles with dual zone climate control and standard HVAC mode control applications. It uses an arm-style door linkage, a 3-ear mounting design, and a 6-terminal electrical connection to move the air door that directs cabin airflow.

Compatible with Subaru WRX, WRX STI, Forester, Impreza, XV, and XV Crosstrek applications listed below, this Four Seasons 73630 replacement is engineered and tested for dependable operation in everyday heating and air conditioning service.

Key Features

• HVAC air door actuator for mode door control
• Arm-style door linkage for air distribution movement
• 3 mounting ears for secure installation
• 6-terminal pin connector
• Direct replacement application for select Subaru HVAC systems
• Four Seasons 73630 part number for accurate ordering

Product Details

This HVAC mode door actuator controls the position of the air door inside the climate system, helping route airflow to the dash vents, floor outlets, or defrost outlets depending on system command. Four Seasons builds this part with mobile A/C experience and tests it for consistent operation, making it a practical replacement when the original actuator no longer responds correctly. The Four Seasons 73630 is listed for 2018-2020 Subaru WRX and WRX STI with dual zone climate control, 2018 Subaru Forester with dual zone climate control, 2015-2016 Subaru WRX and WRX STI, 2013-2014 Subaru Impreza, and 2013 Subaru XV and XV Crosstrek with dual zone climate control.

This part cross-references 72131YC021 and ACT1954IM for the same application.

Common Problems This Part Can Address

• Airflow stuck on one vent position
• No response when changing mode settings
• Improper switching between defrost, dash, and floor outlets
• Clicking or inconsistent actuator movement behind the dash
• HVAC mode door control failure in Subaru WRX, WRX STI, Forester, Impreza, XV, or XV Crosstrek systems

Installation Notes and Tips

Verify the connector style, mounting ear layout, and door linkage style before installation. Confirm the vehicle has the listed HVAC configuration, especially dual zone climate control where noted. After installation, cycle the climate controls through each mode setting to confirm the actuator and door movement are synchronized.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, backed by more than 50 years of mobile A/C experience. This 73630 actuator follows that product approach for HVAC service on Subaru WRX, WRX STI, Forester, Impreza, XV, and XV Crosstrek applications.