Genuine 79140-TZ3-A41 HVAC Driver Mode Door Actuator Motor

The Genuine 79140-TZ3-A41 is an OEM Driver Mode Motor Assembly — also commonly referred to as an HVAC air flap actuator, blend door actuator, or mode door actuator — designed to precisely control airflow direction within the vehicle's heating and air conditioning system. This motor governs which vents receive conditioned air, enabling proper switching between modes such as floor, dash, and defrost.

Key Features:

• Genuine OEM Acura part manufactured to factory specifications for a precise, direct-fit replacement
• Controls airflow distribution within the HVAC system on the driver side
• Restores proper mode selection, eliminating issues such as inconsistent airflow or failure to switch between heating and cooling modes
• Produced and quality-tested to meet original equipment standards
• Driver side (left side) installation

Common Symptoms of a Failed Mode Actuator:

• Air blowing from incorrect or unintended vents
• Clicking or tapping noises from behind the dashboard
• HVAC mode selector not responding correctly
• Climate control diagnostic trouble codes (DTCs) related to airflow

Part Information:

• Manufacturer Part Number: 79140-TZ3-A41
• Also Known As: Motor Assy. Driver Mode, Blend Door Actuator, HVAC Flap Servo Actuator
• Superseded Part Number: 79140TK4A41

Replacing a faulty mode door actuator with a Genuine OEM unit ensures long-term reliability and a factory-correct fit without the risk of fitment or durability issues associated with aftermarket alternatives.