Four Seasons 73666 HVAC Blend Door Actuator - Right

Reliable HVAC Blend Door Actuator for Nissan and INFINITI Vehicles

The Four Seasons 73666 HVAC blend door actuator is designed to restore proper airflow control in your vehicle's heating and cooling system. Compatible with select Nissan and INFINITI models, this actuator features a durable male door linkage and a secure mounting design to ensure consistent performance.

Key Features of Four Seasons 73666 HVAC Blend Door Actuator

• Male door linkage for precise control of air door movement
• Four mounting ears for stable and secure installation
• Three terminal pins for reliable electrical connection
• HVAC air door actuator style engineered for blend door operation
• Compatible with Nissan Altima, Armada, Maxima, NV3500 and INFINITI QX56, QX80 models

Detailed Product Description

The Four Seasons 73666 blend door actuator is an essential component in the HVAC system, responsible for regulating the mix of hot and cold air inside the vehicle cabin. Featuring a male door linkage, this actuator precisely moves the blend door to adjust airflow temperature. The actuator mounts securely with four mounting ears, reducing vibration and ensuring long-term durability. Equipped with three terminal pins, it provides a stable electrical connection for consistent operation. This part is specifically designed for use in Nissan Altima, Armada, Maxima, NV3500, and INFINITI QX56 and QX80 models, making it a direct replacement for factory units.

Common HVAC Issues Addressed by This Blend Door Actuator

• Inconsistent cabin temperature due to blend door malfunction
• Unresponsive or stuck HVAC air door movement
• Unusual noises from the HVAC system during temperature adjustment
• Failure to switch between heating and cooling modes properly
• Electrical connection problems causing intermittent HVAC operation

Installation Notes and Tips

When installing the Four Seasons 73666 blend door actuator, ensure the male door linkage aligns correctly with the blend door mechanism. Secure the actuator using all four mounting ears to prevent movement or vibration. Verify the three terminal pins are properly connected to the vehicle’s wiring harness to maintain reliable electrical contact. It is recommended to test the actuator operation before reassembling the dashboard components.

Quality Assurance and Warranty Information

Four Seasons parts are manufactured to meet or exceed OEM specifications for fit and function. The 73666 blend door actuator undergoes rigorous quality control to ensure durability and reliable performance in Nissan and INFINITI HVAC systems. Please refer to Four Seasons’ official warranty policy for coverage details.