Four Seasons 73512 HVAC Mode Door Actuator

Four Seasons 73512 HVAC Air Door Actuator

The Four Seasons 73512 HVAC mode door actuator is a direct-fit replacement for vehicles that need precise air door movement inside the climate control system. Built as an HVAC air door actuator with a male door linkage, 4 mounting ears, and a 5-pin terminal layout, it supports accurate airflow direction control in Toyota and Lexus applications.

Compatible With 2003-2014 Toyota 4Runner, 2007-2014 Toyota FJ Cruiser, and select 2003-2009 Lexus GX470 applications, this Four Seasons air door actuator is a practical replacement when the original unit no longer responds correctly. Part number 73512 is also referenced by 604314 and A60512 for the same application.

Key Features

• HVAC mode door actuator for cabin airflow control
• Male door linkage for the specified OE-style connection
• 4 mounting ears for secure installation alignment
• 5 terminal pins for the correct electrical interface
• Four Seasons Air Door Actuator line for HVAC replacement needs
• Part number 73512 for Toyota 4Runner, Toyota FJ Cruiser, and Lexus GX470 fitment

Detailed Description

The Four Seasons 73512 is an HVAC mode door actuator used to move the air door inside the heating and air conditioning system, helping direct airflow to the proper vents. This part is built around the listed linkage, mounting, and terminal configuration so it matches the vehicle’s original actuator setup. For Toyota 4Runner, Toyota FJ Cruiser, and Lexus GX470 models, the correct actuator helps restore normal HVAC mode selection and consistent vent control.

This part cross-references 604314 and A60512 for the same application.

What It Helps Fix

• Airflow stuck on one vent position
• Loss of control between defrost, panel, and floor modes
• Clicking or inconsistent movement from a worn actuator
• HVAC mode changes that do not respond correctly
• Uneven cabin airflow routing in the dash HVAC system

Installation Notes and Tips

Verify the connector style, terminal count, linkage type, and mounting ear layout before installation. Match the vehicle application carefully, especially on Lexus GX470 models with the listed production breakpoints and on Toyota 4Runner and FJ Cruiser HVAC systems. Confirm the replacement part number 73512 against the original actuator before removal to reduce installation errors.

Quality Assurance

Four Seasons supplies HVAC replacement components for vehicle climate control systems, and the 73512 actuator is built to match the specified OE-style fitment details for the listed Toyota and Lexus applications.