Four Seasons 73635 HVAC Recirculation Door Actuator

HVAC Recirculation Door Actuator for Infiniti and Nissan

Four Seasons 73635 is an HVAC recirculation door actuator built for auxiliary climate control applications in select Infiniti and Nissan vehicles. It uses a 3-terminal pin layout, a male door linkage, and a 4-ear mounting design to match the specified HVAC air door actuator configuration.

Compatible with 2014-2020 Infiniti QX60 auxiliary systems, 2013-2017 Nissan Pathfinder auxiliary systems, and 2013 Infiniti JX35 auxiliary systems, this part number 73635 is a direct-fit option for vehicles that need recirculation door control restored.

Key Features

• HVAC recirculation door actuator for auxiliary climate control
• Male door linkage for the specified door connection style
• 4 mounting ears for secure HVAC housing attachment
• 3-terminal pin electrical connection
• Four Seasons engineering and testing for consistent operation
• Part number 73635 for easy identification and ordering

Product Details

This HVAC air door actuator is designed to control the recirculation door position inside the climate system, helping direct cabin airflow as the HVAC module commands. Four Seasons 73635 is built for the listed Infiniti QX60, Nissan Pathfinder, and Infiniti JX35 auxiliary applications, with the connector, linkage, and mounting style specified for those vehicles. This part cross-references 277403KA0A and ACT1959IM for the same application.

Common Problems This Part Can Address

• Recirculation door stuck in one position
• Inconsistent cabin airflow routing
• HVAC mode changes that do not respond correctly
• Air delivery issues in the auxiliary climate system
• Clicking or binding from a worn actuator assembly

Installation Notes and Tips

Verify the connector style, door linkage, mounting ear layout, and auxiliary application before installation. Compare the original actuator to Four Seasons 73635 to confirm the 3-pin terminal arrangement and male linkage match the vehicle’s HVAC housing. After installation, cycle the climate controls to confirm the recirculation door moves smoothly through its full range.

Quality Assurance

Four Seasons states that its HVAC components are engineered and tested for long service life, drawing on more than 50 years of mobile air conditioning experience. The brand positions this part as a repair-focused replacement intended to restore proper operation in the specified Infiniti and Nissan applications.