HomeHVAC > Heater Control Valve and Related ComponentsFour Seasons 73129 HVAC Recirculation Door Actuator - Main
Part #: 73129

Four Seasons 73129 HVAC Recirculation Door Actuator - Main

Air Door Actuator, Main
⚙️ 24 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Air Door Actuator, Main
🚗Fitment: Buick and Pontiac, LeSabre and Bonneville
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Overview of Four Seasons Air Door Actuator 73129

The Four Seasons Air Door Actuator 73129 is designed to control the HVAC recirculation door in select Buick and Pontiac vehicles. This actuator ensures proper airflow management within the heating and cooling system, maintaining cabin comfort and system efficiency.

  • Compatible with Buick LeSabre and Pontiac Bonneville models
  • Female door linkage for secure connection
  • Equipped with 3 mounting ears for stable installation
  • Features 4 terminal pins for reliable electrical connection
  • Style: HVAC air door actuator for recirculation door control

Product Line Details: Four Seasons Air Door Actuator

The Air Door Actuator line by Four Seasons focuses on precise control of HVAC system doors, including recirculation and blend doors. This product line is engineered to provide accurate positioning and reliable operation, which is critical for maintaining proper airflow and temperature regulation in vehicle cabins. The 73129 actuator is part of this line, offering compatibility and performance tailored for specific Buick and Pontiac models.

Technical Description and Features

The Four Seasons 73129 HVAC Recirculation Door Actuator features a female door linkage designed to interface securely with the vehicle’s HVAC system. It includes three mounting ears, which provide a firm and vibration-resistant attachment to the HVAC housing. The actuator’s four terminal pins ensure a stable electrical connection, supporting consistent actuator response. This component is specifically styled as an HVAC air door actuator, optimized for controlling the recirculation door function in the heating and cooling system of Buick LeSabre and Pontiac Bonneville vehicles.

Common Applications and Problem Resolution

  • Restores proper operation of the HVAC recirculation door
  • Eliminates issues with inconsistent cabin airflow or temperature control
  • Resolves HVAC system noise caused by faulty door actuation
  • Prevents stale air circulation by ensuring door closes and opens correctly
  • Addresses electrical connection failures related to terminal pin damage

Installation Notes and Tips

When installing the Four Seasons Air Door Actuator 73129, ensure the female door linkage aligns correctly with the HVAC door mechanism. Secure the actuator using all three mounting ears to prevent movement or vibration. Verify that the four terminal pins are properly connected to the vehicle’s wiring harness to maintain electrical integrity. It is recommended to test actuator operation before reassembling the dashboard or HVAC housing to confirm proper function.

Quality Assurance and Warranty

Four Seasons manufactures the 73129 actuator to meet OEM specifications for Buick and Pontiac HVAC systems. The product undergoes quality control testing to ensure durability and reliable performance. Warranty coverage details should be confirmed at the point of purchase, as Four Seasons typically offers limited warranties on their HVAC components.

BrandFour Seasons
Part Number73129
PositionAir Door Actuator, Main
Door LinkageFemale
Mounting Ear Qty.3
StyleHVAC Air Door Actuator
Terminal Pin Qty.4

This part fits 24 vehicles. Search below:

YearMakeModelSubmodelBody TypeLitersCylindersPositionNotes
2005BuickLeSabreCustomSedan3.8LV6N/AWith manual HVAC control.; Air Door Actuator
2005BuickLeSabreCustomSedan3.8LV6N/AAir Door Actuator
2005PontiacBonnevilleN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Air Door Actuator
2005PontiacBonnevilleMainWith manual HVAC control.; Air Door Actuator
2004BuickLeSabreCustomSedan3.8LV6N/AWith manual HVAC control.; Air Door Actuator
2004BuickLeSabreCustomSedan3.8LV6N/AAir Door Actuator
2004PontiacBonnevilleN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Air Door Actuator
2004PontiacBonnevilleMainWith manual HVAC control.; Air Door Actuator
2003BuickLeSabreCustomSedan3.8LV6N/AWith manual HVAC control.; Air Door Actuator
2003BuickLeSabreCustomSedan3.8LV6N/AAir Door Actuator
2003PontiacBonnevilleN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Air Door Actuator
2003PontiacBonnevilleMainWith manual HVAC control.; Air Door Actuator
2002BuickLeSabreCustomSedan3.8LV6N/AWith manual HVAC control.; Air Door Actuator
2002BuickLeSabreCustomSedan3.8LV6N/AAir Door Actuator
2002PontiacBonnevilleN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Air Door Actuator
2002PontiacBonnevilleMainWith manual HVAC control.; Air Door Actuator
2001BuickLeSabreCustomSedan3.8LV6N/AWith manual HVAC control.; Air Door Actuator
2001BuickLeSabreCustomSedan3.8LV6N/AAir Door Actuator
2001PontiacBonnevilleN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Air Door Actuator
2001PontiacBonnevilleMainWith manual HVAC control.; Air Door Actuator
2000BuickLeSabreCustomSedan3.8LV6N/AWith manual HVAC control.; Air Door Actuator
2000BuickLeSabreCustomSedan3.8LV6N/AAir Door Actuator
2000PontiacBonnevilleN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Air Door Actuator
2000PontiacBonnevilleMainWith manual HVAC control.; Air Door Actuator

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

15726461712075524749905249180160411865523027312989018377BDAC1141MT18530

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.