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Four Seasons 73720 HVAC Mode Door Actuator
| Brand | Four Seasons 73720 |
|---|---|
| Door Linkage | Gear |
| Mounting Ear Qty. | 2 |
| Style | Hvac air door actuator |
| Terminal Pin Qty. | 5 |
| Fits | Lexus · 17 vehicles |
Gear linkage. Smooth, precise HVAC air door movement.
Five-pin design. Reliable electrical connection for consistent operation.
Four Seasons experience. Backed by over 50 years of mobile A/C know-how.
Cross-references Four Seasons 73720, 8710630620 and ACT2070IM for the same application. See all 5.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
HVAC Mode Door Actuator for Lexus GS
Four Seasons 73720 is an HVAC mode door actuator built for precise air-door movement in the climate control system. It uses a gear-style door linkage, a 5-pin terminal layout, and a 2-ear mounting design for direct replacement service on select Lexus GS models.
Compatible with 2014-2020 Lexus GS350, 2014-2018 Lexus GS450h, and 2016-2020 Lexus GS F, this HVAC air door actuator is a fitment-based replacement for No. 7 applications in the dash HVAC system. Four Seasons 73720 is engineered and tested for dependable operation in everyday service.
Key Features
- HVAC mode door actuator for interior air distribution control
- Gear-style door linkage for controlled movement
- 5-terminal pin configuration
- 2 mounting ears for secure installation
- Direct-fit replacement for select Lexus GS climate control applications
- Four Seasons part number 73720
Detailed Description
Four Seasons 73720 is a replacement HVAC mode door actuator used to move the air door that directs airflow through the cabin vents, floor outlets, or defrost path. It is built with a gear linkage design and a 5-pin electrical connection, matching the requirements of the listed Lexus applications. This part number 73720 is a practical choice when the original actuator no longer responds correctly or the air distribution system is not changing modes as commanded.
This part cross-references 8710630620 and ACT2070IM for the same application. It is listed for Lexus GS350, Lexus GS450h, and Lexus GS F models in the years shown below.
What It Helps Correct
- Airflow stuck on one vent position
- No change between dash, floor, and defrost modes
- Clicking or binding from the HVAC actuator area
- Inconsistent cabin air direction control
- Faulty mode door movement in the climate system
Installation Notes and Tips
Verify the vehicle’s HVAC actuator location and connector style before installation. Match the replacement to the original mounting ear layout, terminal count, and linkage style to confirm proper fit. After installation, cycle the climate control system through all modes to confirm smooth door movement and correct airflow routing.
- Fits 2016-2020 Lexus GS F, N/A, No. 7
- Fits 2014-2020 Lexus GS350, N/A, No. 7
- Fits 2014-2018 Lexus GS450h, N/A, No. 7
Quality Assurance
Four Seasons states that its products are engineered and tested for years of trouble-free operation, backed by more than 50 years of mobile A/C experience. This HVAC mode door actuator is built to support reliable service in the Lexus GS climate control system.
| Year | Make | Model | Notes |
|---|---|---|---|
| 2020 | Lexus | GS F | No. 7 |
| 2020 | Lexus | GS350 | No. 7 |
| 2019 | Lexus | GS F | No. 7 |
| 2019 | Lexus | GS350 | No. 7 |
| 2018 | Lexus | GS F | No. 7 |
| 2018 | Lexus | GS350 | No. 7 |
| 2018 | Lexus | GS450h | No. 7 |
| 2017 | Lexus | GS F | No. 7 |
| 2017 | Lexus | GS350 | No. 7 |
| 2017 | Lexus | GS450h | No. 7 |
| 2016 | Lexus | GS F | No. 7 |
| 2016 | Lexus | GS350 | No. 7 |
| 2016 | Lexus | GS450h | No. 7 |
| 2015 | Lexus | GS350 | No. 7 |
| 2015 | Lexus | GS450h | No. 7 |
| 2014 | Lexus | GS350 | No. 7 |
| 2014 | Lexus | GS450h | No. 7 |
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