Four Seasons 73722 HVAC Mode Door Actuator

HVAC Mode Door Actuator for Acura CL and TL

Restore proper air distribution in the cabin with this Four Seasons HVAC mode door actuator. Part number 73722 is built for the HVAC air door system and uses a 10-terminal pin layout with an arm-style door linkage for precise control of the mode door.

Compatible with 1999-2003 Acura TL and 2001-2003 Acura CL applications, this actuator is a direct-fit service part for vehicles that need reliable dash vent, floor, or defrost airflow control. Four Seasons 73722 is engineered and tested for consistent operation in everyday HVAC service.

Key Features

• HVAC mode door actuator for air distribution control
• Arm-style door linkage for the mode door mechanism
• 10-terminal pin electrical connection
• 4 mounting ears for secure installation
• Four Seasons part number 73722

Detailed Description

Four Seasons 73722 is an HVAC mode door actuator used to move the air door inside the climate control housing. In Acura CL and Acura TL models, this component helps direct airflow to the dash vents, floor outlets, or defrost outlets based on the selected HVAC setting. When the actuator wears out or loses calibration, airflow routing can become inconsistent or stop responding to control inputs. This replacement is built to match the original actuator style and electrical configuration for the listed applications.

This part cross-references Acura OE-style replacement number 79140S0KA01 for the same application.

Common Problems This Part Can Help Solve

• Air stuck on one vent setting
• No change between panel, floor, and defrost modes
• Clicking or binding from the HVAC dash area
• Incorrect airflow direction in the cabin
• Loss of response from the mode selector

Installation Notes and Tips

Verify the actuator connector, mounting pattern, and linkage style before installation. On 1999-2003 Acura TL and 2001-2003 Acura CL vehicles, access is typically through the HVAC housing behind the dash, so confirm the mode door moves freely before replacing the actuator. After installation, cycle the HVAC controls to allow the system to relearn position if required by the vehicle.

Quality Assurance

Four Seasons states that its HVAC products are engineered and tested for long service life, drawing on more than 50 years of mobile air conditioning experience. Part number 73722 is built to support dependable operation in Acura CL and Acura TL climate control systems.