HomeFour Seasons 73639 HVAC Blend Door Actuator
Part #: 73639

Four Seasons 73639 HVAC Blend Door Actuator

⚙️ 6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Toyota, Sienna
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Reliable HVAC Blend Door Actuator for Toyota Sienna

The Four Seasons 73639 HVAC blend door actuator is designed to restore proper airflow control in your Toyota Sienna's heating and cooling system. Engineered with precise specifications, this actuator ensures smooth operation of the HVAC air door for consistent cabin comfort.

Key Features of Four Seasons 73639 HVAC Blend Door Actuator

  • Door linkage type: Arm for accurate movement and control
  • Mounting ear quantity: 3 for secure and stable installation
  • Style: HVAC air door actuator tailored for blend door functionality
  • Terminal pin quantity: 5 for reliable electrical connections

Detailed Product Description

The Four Seasons 73639 blend door actuator is specifically designed for the Toyota Sienna, providing precise control over the HVAC blend door. Featuring an arm-type door linkage, this actuator moves the air door smoothly to regulate the mix of hot and cold air entering the cabin. The actuator mounts securely with three mounting ears, ensuring a firm fit that minimizes vibration and noise. Equipped with five terminal pins, it offers dependable electrical connectivity for consistent performance. This HVAC air door actuator is engineered to meet OEM specifications, making it a suitable replacement part for maintaining your vehicle's climate control system.

Common Issues Resolved by This HVAC Blend Door Actuator

  • Inconsistent cabin temperature due to blend door malfunction
  • Unusual noises from the HVAC system when adjusting temperature
  • Failure of the HVAC system to switch between heating and cooling modes
  • Reduced airflow or improper air distribution inside the vehicle
  • Dashboard temperature controls not responding correctly

Installation Notes and Tips

When installing the Four Seasons 73639 blend door actuator on your Toyota Sienna, ensure the actuator is aligned properly with the blend door linkage arm. Verify that all three mounting ears are securely fastened to prevent movement or rattling. Check the five terminal pins for clean and secure electrical connections to avoid intermittent operation. It is recommended to test the actuator function before reassembling the dashboard components to confirm proper operation.

Quality Assurance and Warranty

Four Seasons manufactures the 73639 HVAC blend door actuator to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.

BrandFour Seasons
Part Number73639
Door LinkageArm
Mounting Ear Qty.3
StyleHvac air door actuator
Terminal Pin Qty.5

This part fits 6 vehicles. Search below:

YearMakeModelPositionNotes
2003ToyotaSiennaN/A
2002ToyotaSiennaN/A
2001ToyotaSiennaN/A
2000ToyotaSiennaN/A
1999ToyotaSiennaN/A
1998ToyotaSiennaN/A

* 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:

736398710608010ACT1963IMBDAA1376DA1577

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