Santech MT18663 HVAC Blend Door Actuator Air Duct Motor

The Santech MT18663 is an HVAC blend door actuator, also called a blend door motor or air duct motor. It moves the blend door inside the climate control housing, which sets how much air passes through the heater core. That is how the system controls the temperature of the air reaching the cabin.

Key Features:

• Blend door actuator (air duct motor) for the vehicle's heating and A/C air distribution system
• Replaces a worn or failed actuator to restore temperature control
• Brand: Santech, MPN MT18663

A failing blend door actuator can cause temperature that won't adjust or stays stuck on hot or cold. It can also cause clicking noises from behind the dash. Replacing it restores proper temperature control.