Four Seasons 73168 HVAC Mode Door Actuator

Four Seasons 73168 HVAC Air Door Actuator

The Four Seasons Air Door Actuator, part number 73168, is an HVAC mode door actuator built for precise control of air distribution inside the cabin. It uses a cam-style door linkage and a 5-pin terminal layout to support proper mode door movement in the heating and air conditioning system.

Compatible with Cadillac CTS and Cadillac STS applications, this HVAC air door actuator is a direct-fit replacement for vehicles that need accurate recirculation or mode door operation. The Four Seasons 73168 is a practical choice when the HVAC system is stuck on one vent setting or the air direction no longer responds correctly.

Key Features

• HVAC mode door actuator for cabin air direction control
• Cam-style door linkage for the specified application
• 5 mounting ears for secure installation
• 5-terminal pin configuration
• Four Seasons Air Door Actuator line for HVAC service replacement
• Part number 73168 for easy identification and ordering

Detailed Description

Four Seasons 73168 is part of the Air Door Actuator product line and is used in HVAC systems that rely on an electric actuator to move the mode or recirculation door. In Cadillac CTS and Cadillac STS models, this component helps restore proper airflow routing so the system can direct air to the dash, floor, or defrost outlets as commanded. If you are searching for a Cadillac CTS HVAC mode door actuator or a Cadillac STS air door actuator, this part number is a direct reference point for the correct replacement.

This part cross-references A60168 and 15939657 for the same application.

What It Helps Fix

• Airflow stuck at one vent position
• Loss of recirculation door movement
• Incorrect air direction from dash, floor, or defrost outlets
• HVAC mode changes that do not respond properly
• Actuator noise or inconsistent door movement

Installation Notes and Tips

Verify the connector style, mounting ear layout, and door linkage before installation. On Cadillac CTS and Cadillac STS HVAC repairs, confirm the actuator matches the original cam-style linkage and 5-pin electrical connection so the replacement aligns with the existing door shaft and control strategy. After installation, cycle the HVAC controls to confirm full mode-door movement and proper airflow routing.

Quality Assurance

Four Seasons is a recognized name in HVAC replacement components, and the 73168 actuator is built for the listed Cadillac CTS and Cadillac STS applications. Confirm fitment by year and model before purchase to ensure the correct HVAC mode door actuator is selected for your vehicle.