Four Seasons 73766 HVAC Mode Door Actuator

HVAC Mode Door Actuator Overview

Four Seasons 73766 is an HVAC mode door actuator for Ford E-Series applications that use a male door linkage and a two-ear mounting style. It is built for direct replacement use in the climate control system, where accurate air-door movement is needed for proper outlet selection.

With over 50 years of mobile A/C experience, Four Seasons focuses on engineered HVAC components that are tested for dependable operation. Part number 73766 is a practical choice when replacing a worn actuator in Ford E-350 Super Duty, Ford E-450 Super Duty, Ford E-150, or Ford E-250 applications.

• HVAC air door actuator for mode control
• Male door linkage for the actuator connection
• Two mounting ears for secure installation
• Direct replacement part number 73766
• Built for climate control air-door movement

Fitment Details

Compatible with these applications: Fits 2021-2025 Ford E-450 Super Duty, N/A, Floor; Fits 2009-2019 Ford E-450 Super Duty, N/A, Floor; Fits 2021-2024 Ford E-350 Super Duty, N/A, Floor; Fits 2009-2019 Ford E-350 Super Duty, N/A, Floor/Defrost; Fits 2009-2014 Ford E-150, N/A, Floor/Defrost; Fits 2009-2014 Ford E-250, N/A, Floor/Defrost.

This part cross-references Ford (e.g., 9C2Z18A318A, F2UZ18C680B) for the same application.

What It Helps Correct

• Incorrect air outlet selection from the HVAC system
• Sticking or unresponsive mode door movement
• Loss of airflow control between floor and defrost settings
• Noise or inconsistent operation from a worn actuator

Installation Notes

Verify the door linkage style, mounting ear layout, and vehicle-specific HVAC configuration before installation. Confirm the replacement matches the original actuator design and connector-free terminal layout shown in the product data.

Quality Assurance

Four Seasons engineers and tests its products for long service life, drawing on more than 50 years of mobile A/C experience. Part number 73766 is backed by that product development approach for HVAC repair work.