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Four Seasons 73543 HVAC Recirculation Door Actuator
| Brand | Four Seasons 73543 |
|---|---|
| Door Linkage | Cam |
| Mounting Ear Qty. | 4 |
| Style | Hvac air door actuator |
| Terminal Pin Qty. | 5 |
| Fits | Acura and Honda · 20 vehicles |
Cam linkage. Smoothly drives the HVAC air door actuator.
Five-pin design. Provides a straightforward electrical connection.
Four Seasons experience. Backed by over 50 years in mobile A/C.
Cross-references Four Seasons 73543, Global Parts Distributors LLC 1712723 and 79350TR0A01 for the same application. See all 8.
Four Seasons 73543 HVAC Recirculation Door Actuator
The Four Seasons 73543 HVAC recirculation door actuator restores control of the air door that directs cabin air through the recirculation system. Built with a cam-style door linkage, 4 mounting ears, and a 5-pin terminal layout, it is a direct-fit HVAC air door actuator for select Acura and Honda applications.
Compatible with 2013-2022 Acura ILX, 2013-2018 Acura RDX, and 2012-2015 Honda Civic, this actuator is a practical replacement when the recirculation door no longer responds correctly. Four Seasons backs this part with more than 50 years of mobile A/C experience and product testing focused on long-term operation.
Key Features
- HVAC recirculation door actuator for cabin air control
- Cam-style door linkage for the specified application
- 4 mounting ears for OE-style attachment points
- 5-terminal pin configuration
- Direct replacement part number 73543
- Cross-references Global Parts Distributors LLC 1712723 for the same application
Detailed Description
The Four Seasons 73543 is an HVAC air door actuator used to move the recirculation door inside the climate control housing. When the actuator operates correctly, the system can switch between outside air and recirculated cabin air as commanded by the HVAC controls. This part is built for select Acura ILX, Acura RDX, and Honda Civic models, making it a focused solution for vehicles with recirculation door movement issues.
Part number 73543 is engineered and tested for dependable operation in the HVAC system. If your Acura ILX, Acura RDX, or Honda Civic has inconsistent airflow routing, a stuck recirculation setting, or a door that does not respond to control inputs, this actuator addresses the mechanical movement at the source.
Common Issues This Part May Solve
- Recirculation door stuck in one position
- Airflow not switching between fresh air and recirculated air
- HVAC control commands not moving the door correctly
- Clicking or binding from the HVAC actuator area
- Uneven cabin air distribution caused by door movement failure
Installation Notes and Tips
Verify the connector style, 5-pin terminal layout, cam linkage, and mounting ear configuration before installation. Access to the HVAC housing may require removal of interior trim panels or adjacent components, depending on the vehicle. After installation, cycle the HVAC controls to confirm smooth recirculation door movement and proper system response.
Quality Assurance
Four Seasons states that its products are engineered and tested for years of trouble-free operation. With more than 50 years of mobile A/C experience, the brand focuses on replacement parts that meet the demands of automotive HVAC service.
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2022 | Acura | ILX | — | — | — | N/A | — |
| 2021 | Acura | ILX | — | — | — | N/A | — |
| 2020 | Acura | ILX | — | — | — | N/A | — |
| 2019 | Acura | ILX | — | — | — | N/A | — |
| 2018 | Acura | ILX | — | — | — | N/A | — |
| 2018 | Acura | RDX | — | — | — | N/A | — |
| 2017 | Acura | ILX | — | — | — | N/A | — |
| 2017 | Acura | RDX | — | — | — | N/A | — |
| 2016 | Acura | ILX | — | — | — | N/A | — |
| 2016 | Acura | RDX | — | — | — | N/A | — |
| 2015 | Acura | ILX | — | — | — | N/A | — |
| 2015 | Acura | RDX | — | — | — | N/A | — |
| 2015 | Honda | Civic | Sedan | 1.8L | L4 | N/A | — |
| 2014 | Acura | ILX | — | — | — | N/A | — |
| 2014 | Acura | RDX | — | — | — | N/A | — |
| 2014 | Honda | Civic | Sedan | 1.8L | L4 | N/A | — |
| 2013 | Acura | ILX | — | — | — | N/A | — |
| 2013 | Acura | RDX | — | — | — | N/A | — |
| 2013 | Honda | Civic | Sedan | 1.8L | L4 | N/A | — |
| 2012 | Honda | Civic | Sedan | 1.8L | L4 | N/A | — |
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