Dial in cabin comfort with the Four Seasons HVAC Blend Door Actuator 73680, a small electric motor that drives the air-blend/mode door inside the HVAC case to direct airflow and mix warm and cool air to the setting you select. It installs as a direct-fit replacement for the right, auxiliary position on many vehicles, among them the 2018-2024 Toyota Highlander, 2019-2024 Toyota Sienna and 2023-2024 Toyota Sequoia. See the Buyer's Guide tab for the full list and engine-level details.
Built by Four Seasons on over 50 years of mobile A/C experience, this HVAC blend door actuator is engineered and tested for dependable, long-term operation.
- Included hardware: includes the lever arm, gear, cam gear hardware, and linkage as applicable.
- Quality internals: internal motor, drive gears, electronics, and connections.
- Validated: tested for function, durability, and longevity, and built to match OE fit and function.
If a failed actuator is the cause of temperature or mode-door problems — a door stuck on hot or cold, no response to control changes, or a clicking/knocking sound behind the dash — replacing it with 73680 replaces the drive for that door. Diagnose the cause before ordering, since blend-air faults can have other origins.
Interchange: ACT1999IM · BDAA1408 · DA1618 · 871060E160
This part cross-references / interchanges with the following part numbers:
ACT1999IM, 73680, BDAA1408, DA1618, 871060E160
