Dorman 604-870 HVAC Blend Door Actuator - Left Main
OE Quality 60-Day Returns
Dorman

Dorman 604-870 HVAC Blend Door Actuator - Left Main

Brand Dorman 604-870
Position Left Main
Material Plastic
Package Contents 1 Air Door Actuator
Switch Activation Type Rotary
Terminal Gender Male
Terminal Quantity 7
Terminal Type Pin
Fits Honda and Acura · 14 vehicles

OE-style replacement. Precision-engineered to match original quality and performance.

Rotary activation. Smooth actuator operation with a pin terminal design.

Plastic housing. Lightweight construction for HVAC blend door control.

Cross-references Standard Ignition ADR4261, 79160STXA41 and ADS4261 for the same application. See all 4.

$54.53Free shipping
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Dorman 604-870 HVAC Blend Door Actuator

Dorman 604-870 is a heater blend door actuator engineered to match the fit and function of the original HVAC actuator on select Honda and Acura vehicles. It is built for temperature control operation in the HVAC box and uses a rotary activation design with a 7-pin male terminal connection.

Key Features

  • Direct replacement HVAC blend door actuator for temperature control operation
  • Rotary switch activation type for blend door movement
  • 7-pin male terminal design for the specified vehicle applications
  • Plastic housing construction
  • Matches original equipment performance on listed applications
  • Cross-reference part numbers include Standard Ignition ADR4261

Detailed Description

This Dorman HVAC blend door actuator, part number 604-870, is designed for the left main position in the HVAC box on 2009-2015 Honda Pilot and 2007-2013 Acura MDX models. It controls the blend door that regulates air temperature by directing airflow through the heater and A/C system. For drivers searching for a Honda Pilot blend door actuator or Acura MDX HVAC temperature control actuator, this part provides an OE-style replacement built to match the original unit’s quality and performance.

Use Dorman 604-870 when the factory actuator no longer responds correctly to HVAC commands or when temperature blending becomes inconsistent. This part cross-references Standard Ignition ADR4261 for the same application.

What It Helps Fix

  • Incorrect cabin temperature output from the HVAC system
  • Clicking or repeated movement from a worn blend door actuator
  • Airflow that stays stuck on hot or cold settings
  • Loss of proper temperature control in the left main HVAC zone
  • HVAC blend door response problems in Honda Pilot and Acura MDX models

Installation Notes and Tips

Verify the connector style, terminal count, and left main position before installation. This actuator uses a rotary activation design with a 7-pin male terminal layout, so matching the original electrical connection is important. Confirm vehicle year, make, model, and HVAC box location against the listed fitment for 2009-2015 Honda Pilot and 2007-2013 Acura MDX.

Quality Assurance

Dorman manufactures this replacement actuator to align with the original blend door actuator’s fit and performance on the specified vehicles. The part is engineered for direct replacement use in the listed applications.

Related reading

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2015HondaPilotLeft MainTemperature control HVAC blend door actuator for box packaging.
2014HondaPilotLeft MainTemperature control HVAC blend door actuator for box packaging.
2013AcuraMDXLeft MainTemperature control HVAC blend door actuator for box packaging.
2013HondaPilotLeft MainTemperature control HVAC blend door actuator for box packaging.
2012AcuraMDXLeft MainTemperature control HVAC blend door actuator for box packaging.
2012HondaPilotLeft MainTemperature control HVAC blend door actuator for box packaging.
2011AcuraMDXLeft MainTemperature control HVAC blend door actuator for box packaging.
2011HondaPilotLeft MainTemperature control HVAC blend door actuator for box packaging.
2010AcuraMDXLeft MainTemperature control HVAC blend door actuator for box packaging.
2010HondaPilotLeft MainTemperature control HVAC blend door actuator for box packaging.
2009AcuraMDXLeft MainTemperature control HVAC blend door actuator for box packaging.
2009HondaPilotLeft MainTemperature control HVAC blend door actuator for box packaging.
2008AcuraMDXLeft MainTemperature control HVAC blend door actuator for box packaging.
2007AcuraMDXLeft MainTemperature control HVAC blend door actuator for box packaging.
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — ADR426179160STXA41ADS4261APBDA0315