Dorman 604-452 HVAC Blend Door Actuator - Main
OE Quality 60-Day Returns
Dorman

Dorman 604-452 HVAC Blend Door Actuator - Main

Brand Dorman 604-452
Position Main
Material Plastic
Package Contents 1 Air Door Actuator
Switch Activation Type Rotary
Terminal Gender Male
Terminal Quantity 5
Terminal Type Blade
Fits Mazda · 18 vehicles

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

Rotary design. Provides smooth, reliable HVAC blend door control.

Plastic housing. Lightweight construction with blade terminals for easy connection.

Cross-references KD4761A70 for the same application. See all 1.

$74.73Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Dorman 604-452 HVAC Blend Door Actuator

Dorman 604-452 is an HVAC heater blend door actuator built for specific Mazda applications where precise air door movement is needed for proper cabin airflow control. It is engineered to match the quality and performance of the original actuator on listed vehicles, including Mazda 3, Mazda 3 Sport, Mazda 6, and CX-5 models.

Key Features

  • Rotary switch activation for blend door control
  • 5 blade terminals with male terminal design
  • Plastic housing for HVAC system integration
  • Direct replacement style for listed Mazda fitments
  • Cross-reference part number: KD4761A70

Detailed Description

This HVAC blend door actuator controls the movement of the air door inside the heater and air conditioning case, helping direct airflow to the selected vents and temperature settings. Dorman 604-452 is designed for Mazda HVAC systems that require a rotary actuator with a 5-terminal blade connection. It is a practical replacement for vehicles such as the Mazda 3, Mazda 3 Sport, Mazda 6, and CX-5, and it supports accurate mode selection in the HVAC box.

Compatible With 2018 Mazda 3, Main; 2018 Mazda 3 Sport, Main; 2014-2017 Mazda 3; 2014-2017 Mazda 3 Sport; 2014-2017 Mazda 6; 2013-2016 Mazda CX-5. The Dorman 604-452 part number is also a useful reference when comparing HVAC actuator listings for these Mazda applications.

What It Helps Address

  • Airflow stuck on one vent setting
  • Temperature changes that do not respond correctly
  • HVAC mode selection problems
  • Clicking or inconsistent actuator movement behind the dash
  • Loss of proper blend door positioning in the heater box

Installation Notes and Tips

Verify the connector style, terminal count, and actuator type before installation. Match the replacement to the vehicle’s HVAC configuration and confirm the listed fitment for your Mazda 3, Mazda 3 Sport, Mazda 6, or CX-5. After installation, cycle the HVAC controls to confirm the blend door responds correctly across all modes.

Quality Assurance

This actuator is precision-engineered to align with the original part’s quality and performance expectations for the specified applications. Dorman 604-452 is built as an OE-style replacement for the listed Mazda HVAC systems.

Related reading

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2018Mazda3MainHVAC Blend Door Actuator for mode selection in box packaging.
2018Mazda3 SportMainHVAC Blend Door Actuator for mode selection in box packaging.
2017Mazda3N/AHVAC Blend Door Actuator for mode selection in box packaging.
2017Mazda3 SportN/AHVAC Blend Door Actuator for mode selection in box packaging.
2017Mazda6N/AHVAC Blend Door Actuator for mode selection in box packaging.
2016Mazda3N/AHVAC Blend Door Actuator for mode selection in box packaging.
2016Mazda3 SportN/AHVAC Blend Door Actuator for mode selection in box packaging.
2016Mazda6N/AHVAC Blend Door Actuator for mode selection in box packaging.
2016MazdaCX-5N/AHVAC Blend Door Actuator for mode selection in box packaging.
2015Mazda3N/AHVAC Blend Door Actuator for mode selection in box packaging.
2015Mazda3 SportN/AHVAC Blend Door Actuator for mode selection in box packaging.
2015Mazda6N/AHVAC Blend Door Actuator for mode selection in box packaging.
2015MazdaCX-5N/AHVAC Blend Door Actuator for mode selection in box packaging.
2014Mazda3N/AHVAC Blend Door Actuator for mode selection in box packaging.
2014Mazda3 SportN/AHVAC Blend Door Actuator for mode selection in box packaging.
2014Mazda6N/AHVAC Blend Door Actuator for mode selection in box packaging.
2014MazdaCX-5N/AHVAC Blend Door Actuator for mode selection in box packaging.
2013MazdaCX-5N/AHVAC Blend Door Actuator for mode selection in box packaging.
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
KD4761A70