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Four Seasons 73721 HVAC Recirculation Door Actuator
| Brand | Four Seasons 73721 |
|---|---|
| Door Linkage | Male |
| Mounting Ear Qty. | 3 |
| Style | Hvac air door actuator |
| Terminal Pin Qty. | 5 |
| Fits | Ford, Hyundai, and Kia · 17 vehicles |
HVAC air door actuator. Controls the recirculation door with a 5-pin electrical connection.
Three mounting ears. Provides a secure, stable attachment for dependable operation.
Four Seasons experience. Backed by over 50 years in mobile A/C.
Cross-references Four Seasons 73721, 97162C1000 and AB3Z19E616A for the same application. See all 6.
HVAC Recirculation Door Actuator for Ford, Kia, and Hyundai
Four Seasons 73721 is an HVAC recirculation door actuator built for vehicles that need precise air door movement inside the climate control system. It is engineered and tested for dependable operation, with a design backed by more than 50 years of mobile A/C experience.
- HVAC air door actuator for recirculation door control
- Male door linkage for direct actuator-to-door engagement
- 3 mounting ears for secure HVAC case attachment
- 5 terminal pin electrical connection
- OE-style replacement for select Ford Ranger, Kia Cadenza, Kia Optima, and Hyundai Sonata applications
Detailed Product Overview
This Four Seasons HVAC recirculation door actuator, part number 73721, is used to move the recirculation or air door inside the HVAC housing so the system can switch between outside air and cabin air flow. It is a direct-fit style component for select 2016-2023 vehicles, including 2019-2023 Ford Ranger, 2017-2020 Kia Cadenza, 2017-2020 Kia Optima, and 2016-2019 Hyundai Sonata applications. This part cross-references OE-style numbers such as 97162C1000 and AB3Z19E616A for the same application.
Common Issues This Part Can Address
- Recirculation door stuck in one position
- HVAC system not switching between fresh air and recirculated air
- Improper airflow direction from the climate control system
- Clicking or inconsistent actuator movement behind the dash
- Loss of cabin air control in Ford Ranger, Kia Optima, Kia Cadenza, or Hyundai Sonata models
Installation Notes and Tips
Verify the connector style, 5-pin terminal layout, male linkage, and 3-ear mounting pattern before installation. Compare the original actuator to the replacement part number 73721 and confirm vehicle-specific HVAC housing fitment before removal of trim panels or the glove box area. After installation, cycle the climate control system to confirm smooth door movement and proper recirculation operation.
Quality Assurance
Four Seasons engineers and tests HVAC components for long-term operation, drawing on over 50 years of mobile air conditioning experience. Part number 73721 is built as a replacement actuator for select Ford, Kia, and Hyundai HVAC systems.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Notes |
|---|---|---|---|---|---|---|
| 2023 | Ford | Ranger | — | — | — | — |
| 2022 | Ford | Ranger | — | — | — | — |
| 2021 | Ford | Ranger | — | — | — | — |
| 2020 | Ford | Ranger | — | — | — | — |
| 2020 | Kia | Cadenza | — | — | — | — |
| 2020 | Kia | Optima | — | — | — | — |
| 2019 | Ford | Ranger | — | — | — | — |
| 2019 | Hyundai | Sonata | 2.4L | L4 | GAS | — |
| 2019 | Kia | Cadenza | — | — | — | — |
| 2019 | Kia | Optima | — | — | — | — |
| 2018 | Hyundai | Sonata | 2.4L | L4 | GAS | — |
| 2018 | Kia | Cadenza | — | — | — | — |
| 2018 | Kia | Optima | — | — | — | — |
| 2017 | Hyundai | Sonata | 2.4L | L4 | GAS | — |
| 2017 | Kia | Cadenza | — | — | — | — |
| 2017 | Kia | Optima | — | — | — | — |
| 2016 | Hyundai | Sonata | 1.6L | L4 | GAS | — |
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