Four Seasons
Air Door Actuator

Four Seasons 73120 HVAC Blend Door Actuator - Left or Main

Brand Four Seasons 73120
Position Left
Door Linkage Arm
Mounting Ear Qty. 3
Style HVAC Air Door Actuator
Terminal Pin Qty. 5
Product line Air Door Actuator
Fits Volkswagen and Audi · 18 vehicles

Air door actuator. Controls HVAC airflow with precise blend door movement.

Arm linkage. Built with an arm-style linkage for smooth operation.

5-pin design. Uses a 5-terminal connection for straightforward integration.

Cross-references Dayco 73120, Global Parts Distributors LLC 1712284 and Global Parts Distributors LLC 1712285 for the same application. See all 9.

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HVAC Air Door Actuator for Volkswagen and Audi

Four Seasons 73120 is an HVAC blend door actuator built for vehicles with automatic temperature control. It controls air door movement inside the climate system to help direct airflow and temperature output as the HVAC module commands it. This Four Seasons Air Door Actuator line is used for precise cabin air management in select Volkswagen and Audi applications.

Key Features

  • HVAC air door actuator with arm-style door linkage
  • 3 mounting ears for secure installation
  • 5-terminal pin electrical connection
  • Direct-fit style for automatic temperature control HVAC systems
  • Cross-references Dayco 73120 for the same application

Detailed Description

Four Seasons 73120 is an HVAC blend door actuator designed to move the air door that regulates cabin airflow, temperature blend, and distribution. The arm linkage and 5-pin terminal layout support controlled operation in automatic climate control systems. This part number is used in select Volkswagen Golf, Golf City, GTI, Jetta, and R32 applications, as well as Audi TT and TT Quattro models. If you are replacing a failed Volkswagen Golf blend door actuator or an Audi TT HVAC air door actuator, Four Seasons 73120 provides the correct style and mounting configuration for the listed vehicles.

What It Helps Fix

  • Temperature stuck on hot or cold
  • Airflow not changing between vents, floor, or defrost
  • Clicking or repeated movement from the dash HVAC area
  • Inconsistent cabin temperature control
  • Loss of response from the automatic climate control system

Installation Notes and Tips

  • Verify the vehicle uses Automatic Temperature Control (ATC) before ordering.
  • Match the position and connector style to the original actuator.
  • Confirm the mounting ear count and arm linkage style against the removed part.
  • Fits 2006-2007 Volkswagen Golf, Left; 2007 Volkswagen Golf City, Left; 2006-2007 Volkswagen GTI, Left.
  • Fits 2003-2006 Audi TT, Main; 2003-2006 Audi TT Quattro, Main; 2005 Volkswagen Golf, Left; 2005 Volkswagen Jetta, N/A; 2003-2004 Volkswagen Jetta, N/A; 2004 Volkswagen R32, N/A.

Quality Assurance

Four Seasons HVAC components are cataloged for OE-style replacement applications and are identified by part number 73120 for accurate ordering and fitment verification. Always compare the original actuator, connector, and vehicle HVAC configuration before installation.

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2007VolkswagenGolfLeftCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2007VolkswagenGolf CityLeftCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2007VolkswagenGTILeftCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2006AudiTTMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2006AudiTT QuattroMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2006VolkswagenGolfLeftCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2006VolkswagenGTILeftCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2005AudiTTMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2005AudiTT QuattroMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2005VolkswagenGolfLeftOnly compatible with automatic A/C equipped vehicles.; Air Door Actuator
2005VolkswagenJettaN/AAir Door Actuator
2004AudiTTMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2004AudiTT QuattroMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2004VolkswagenJettaN/ARectangular Shape Engine Coolant Temperature Sensor - HVAC Blend Door Actuator; Air Door Actuator
2004VolkswagenR32N/AFrom 9/03
2003AudiTTMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2003AudiTT QuattroMainCompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Air Door Actuator
2003VolkswagenJettaN/ARectangular Shape Engine Coolant Temperature Sensor - HVAC Blend Door Actuator; Air Door Actuator
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dayco — 73120Global Parts Distributors LLC — 1712284Global Parts Distributors LLC — 17122851J1907511F60483465620331A27420BDAD1132MT18537