Four Seasons 73702 HVAC Blend Door Actuator - Left

HVAC Blend Door Actuator for Subaru Legacy and Outback

Restore proper cabin temperature control with this Four Seasons HVAC blend door actuator, part number 73702. It is built for the left-side HVAC air door position and uses an arm-style door linkage with a 7-pin terminal layout for the listed Subaru applications.

Compatible with 2010-2012 Subaru Legacy, left; 2011 Subaru Outback, left; and 2010 Subaru Outback, left from 2/09. Four Seasons 73702 is a direct-fit HVAC blend door actuator for Subaru Legacy and Subaru Outback climate control repair.

Key Features

• HVAC air door actuator for blend door control
• Arm-style door linkage for the specified application
• 4 mounting ears for secure installation
• 7-terminal pin configuration
• Left-side fitment for select Subaru Legacy and Outback models
• Four Seasons 73702 replacement part

Product Details

This Four Seasons HVAC blend door actuator is engineered for dependable operation in the vehicle’s heating and air conditioning system. It controls the blend door position that regulates airflow through the HVAC case, helping maintain the selected cabin temperature. Four Seasons backs this part with more than 50 years of mobile A/C experience and states that its products are tested for long service life and trouble-free operation.

For Subaru Legacy and Subaru Outback owners dealing with inconsistent temperature output, clicking HVAC noises, or a blend door that no longer responds correctly, part number 73702 provides the correct left-side actuator configuration for the listed vehicles. This part cross-references 72131AJ10A for the same application.

Common Issues This Part May Resolve

• Driver-side temperature stuck hot or cold
• HVAC air not changing between heat and cool settings
• Clicking or ticking sounds from behind the dash
• Blend door movement failure or erratic operation
• Uneven cabin airflow control on the left side

Installation Notes and Tips

Verify the original actuator’s connector, mounting ear count, linkage style, and left-side location before installation. On 2010 Subaru Outback applications, confirm the build date is from 2/09. After installation, cycle the ignition and HVAC controls so the system can relearn or recalibrate the door position if required by the vehicle.

Quality Assurance

Four Seasons designs and tests its HVAC components for reliable operation, drawing on over 50 years of mobile air conditioning experience. Part number 73702 is built to meet the demands of everyday climate control service in the Subaru Legacy and Outback platform.