Four Seasons 73771 HVAC Blend Door Actuator - Auxiliary
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Four Seasons

Four Seasons 73771 HVAC Blend Door Actuator - Auxiliary

Brand Four Seasons 73771
Position Auxiliary
Door Linkage Gear
Mounting Ear Qty. 4
Style Hvac air door actuator
Terminal Pin Qty. 5
Fits Subaru · 6 vehicles

Gear-driven design. Provides controlled HVAC air door movement for precise blend operation.

Five-terminal connection. Matches the specified electrical interface for the replacement application.

Four Seasons 73771. Replacement HVAC actuator backed by decades of mobile A/C experience.

Cross-references Four Seasons 73771 and 72131XC00A for the same application. See all 2.

$38.35Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $38.35
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

HVAC Blend Door Actuator Overview

The Four Seasons 73771 HVAC blend door actuator is a gear-driven replacement built for precise air door control in the climate system. It is a direct-fit option for select Subaru Ascent auxiliary applications and is engineered for dependable operation in everyday service.

  • Gear-style HVAC air door actuator for controlled blend door movement
  • Five-terminal electrical connection for the specified application
  • Four mounting ears for secure installation alignment
  • Four Seasons 73771 replacement part for HVAC actuator service

Fitment Details

Compatible with Subaru Ascent auxiliary HVAC applications. Fits 2020-2024 Subaru Ascent, auxiliary. Fits 2019 Subaru Ascent, auxiliary, from 1/2018. This part cross-references 72131XC00A for the same application.

Common Replacement Uses

  • Restores proper temperature blend control when the actuator no longer responds correctly
  • Addresses clicking, binding, or inconsistent air door movement inside the HVAC system
  • Replaces a worn actuator that causes incorrect cabin air distribution
  • Helps correct loss of precise climate control in the auxiliary HVAC circuit

Installation Notes

Verify the connector style, terminal count, mounting ear layout, and auxiliary application before installation. Match the replacement to the vehicle’s HVAC configuration and confirm the part number 73771 against the original unit for proper fitment.

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.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2024SubaruAscentAuxiliary—
2023SubaruAscentAuxiliary—
2022SubaruAscentAuxiliary—
2021SubaruAscentAuxiliary—
2020SubaruAscentAuxiliary—
2019SubaruAscentAuxiliaryFrom 1/2018
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 7377172131XC00A