Dorman HVAC Blend Door Actuator 604-970 for Infiniti/Nissan — Position-Specific Direct Replacement, Restores Airflow

The Dorman 604-970 HVAC blend door actuator replaces a faulty blend/air door actuator on specific Infiniti and Nissan models to restore proper HVAC airflow and temperature control.

If your vehicle's heater or air conditioner no longer directs air correctly or you hear clicking from the dash, the blend door actuator can be the culprit. Dorman's 604-970 is a position-specific, direct-replacement actuator designed to match the original fit and function for certain model years of Infiniti QX56 and multiple Nissan models including Armada, Quest, Titan and Pathfinder Armada. Before ordering, confirm the actuator position and vehicle compatibility using your vehicle trim in the garage or fitment tool.

How will this actuator fix noise or inconsistent airflow?

Worn or failed blend door actuators often produce repeated clicking noises and fail to move internal HVAC doors, causing inconsistent cabin temperature or wrong vent selection. Replacing the actuator with the correct position-specific unit restores the actuator’s ability to move the blend/air door and reliably control airflow paths.

• Eliminates clicking and grinding noises from dash HVAC area
• Restores accurate air temperature mixing between vents
• Returns control over vent selection and airflow direction

Which vehicles and years does the Dorman 604-970 fit?

The 604-970 is listed for specific model years and positions—compatibility depends on year, model and the actuator’s function in the HVAC system. Always verify exact fit by entering your make, model and trim into the garage or vehicle fitment tool before purchase.

• Infiniti QX56: 2004–2010
• Nissan Armada: 2005–2015
• Nissan Pathfinder Armada: 2004
• Nissan Quest: 2004–2009; Nissan Titan: 2004–2015

What makes this Dorman actuator a reliable direct replacement?

Dorman designs and tests replacement HVAC actuators to match OEM fit and function while resisting common failure modes like electrical burnout and mechanical wear. This replacement is engineered to install in the same location and perform the same role as the original factory actuator when the application notes indicate a match.

• Durable construction tested for wear and electrical reliability
• Engineered to match original fit and mounting points
• Backed by Dorman’s engineering and U.S.-based expertise

What should I check before ordering or installing the actuator?

Because many vehicles use multiple different actuators, confirm the actuator’s position (blend door, mode door, recirculation, etc.) and the correct years/models in the application notes. If unsure about which actuator is needed, consult a qualified service technician to identify the failed unit and location.

• Use the online garage/fitment tool with your exact trim level
• Verify the actuator position and function against your vehicle’s HVAC layout
• Seek professional diagnosis if actuator location is unknown

Who is this for? The Dorman 604-970 HVAC blend door actuator is intended for owners and mechanics working on compatible Infiniti QX56 and Nissan models from the listed years who need a dependable, position-specific replacement for a noisy or non-functioning HVAC door actuator. It’s best for those who have confirmed the actuator position and want a direct-fit unit engineered to match OEM form and function, reduce downtime, and restore proper cabin airflow and temperature control.