Four Seasons 73114 HVAC Blend Door Actuator

HVAC Blend Door Actuator for Mercedes-Benz ML-Class

Four Seasons 73114 is an HVAC air door actuator built for blend door control in select Mercedes-Benz ML-Class vehicles. It uses a 5-pin terminal layout, a female door linkage, and a 3-ear mounting design to match the original actuator style for accurate HVAC door movement.

The Four Seasons Air Door Actuator line focuses on direct-fit HVAC control components for temperature and airflow management. This part number, 73114, is specified as an HVAC air door actuator and is listed for Mercedes-Benz ML320, ML430, ML500, ML55 AMG, and ML350 applications.

Key Features

• Four Seasons Air Door Actuator line for HVAC blend door control
• Female door linkage for the specified actuator connection style
• 3 mounting ears for OE-style attachment points
• 5 terminal pins for the correct electrical interface
• Direct replacement format for select Mercedes-Benz ML-Class HVAC systems
• Part number 73114 for easy identification and ordering

Detailed Description

Four Seasons 73114 is an HVAC blend door actuator used to move the air door inside the climate control housing, helping direct heated or cooled air through the proper vents. It is listed for 1998-2003 Mercedes-Benz ML320, 1999-2001 Mercedes-Benz ML430, 2002-2005 Mercedes-Benz ML500, 2000-2003 Mercedes-Benz ML55 AMG, and 2003-2005 Mercedes-Benz ML350 models. If you are searching for a Mercedes-Benz ML320 blend door actuator, a Mercedes-Benz ML500 HVAC air door actuator, or a Mercedes-Benz ML55 AMG air door actuator, this part number 73114 is the relevant reference.

This part cross-references Dayco 73114 and Genuine 1638200108 for the same application.

Common HVAC Issues It May Solve

• Temperature stuck on hot or cold
• Airflow not changing between dash, floor, or defrost outlets
• Clicking or repeated movement from the HVAC housing
• Blend door not responding to climate control commands
• Inconsistent cabin temperature control in the Mercedes-Benz ML-Class

Installation Notes and Tips

Verify the connector style, mounting ear layout, and linkage type before installation. Compare the original actuator to Four Seasons 73114 and confirm the vehicle’s HVAC system matches the listed Mercedes-Benz ML320, ML430, ML500, ML55 AMG, or ML350 fitment. After installation, cycle the climate controls to allow the HVAC system to relearn actuator position if required by the vehicle.

Quality Assurance

Four Seasons supplies HVAC replacement components for climate control repair applications, and this actuator is cataloged with OE-style fitment details to support accurate replacement selection. Confirm part number 73114 against the original unit and vehicle application before ordering.