Dorman 604-163 HVAC Blend Door Actuator - Main
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Dorman

Dorman 604-163 HVAC Blend Door Actuator - Main

Brand Dorman 604-163
Position Main
Material Plastic
Package Contents Actuator
Switch Activation Type Rotary
Fits Cadillac · 5 vehicles

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

Rotary design. Provides smooth, accurate control of the blend door.

Plastic construction. Lightweight actuator built for HVAC applications.

Cross-references 25740394, ADS4223 and APBDA0215 for the same application. See all 3.

$58.00Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $58.00
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Dorman 604-163 HVAC Blend Door Actuator

Dorman 604-163 is a rotary HVAC blend door actuator built for specific Cadillac CTS and Cadillac SRX applications. It is precision-engineered to match the quality and performance of the original actuator, helping restore proper HVAC mode control in the vehicle.

  • Rotary switch activation type for HVAC mode control
  • Plastic housing construction
  • Package contents: actuator
  • OE-style replacement for selected Cadillac CTS and SRX models
  • Cross-reference part number: 25740394

Detailed Product Overview

This HVAC blend door actuator is used in the heating and air conditioning system to move the blend or mode door based on control input. Dorman 604-163 is designed for direct replacement use on 2003-2004 Cadillac CTS, 2004 Cadillac SRX, and select 2005 Cadillac CTS and 2005 Cadillac SRX vehicles with the listed VIN breakpoints. If you are searching for a 2005 Cadillac CTS HVAC blend door actuator or a 2004 Cadillac SRX mode actuator, this part number is a direct fitment match for the specified applications.

The rotary design and plastic construction support consistent actuator movement in the HVAC case. Dorman 604-163 also cross-references ADS4223 for the same application.

Common HVAC Problems This Part Can Address

  • Incorrect air distribution between dash, floor, and defrost vents
  • HVAC mode door movement that does not respond to control changes
  • Temperature or airflow settings that do not change as expected
  • Clicking or repeated actuator movement from a worn internal mechanism
  • Loss of proper cabin airflow routing in Cadillac CTS and SRX models

Installation Notes and Tips

Verify the vehicle year, model, and VIN breakpoint before ordering. This actuator is listed for the main position and mode function on the specified Cadillac CTS and Cadillac SRX applications. Confirm the HVAC system diagnosis before replacement, and compare the original connector and mounting style to the new part before installation.

Quality Assurance

Dorman states that this heater blend door actuator is precision-engineered to match the quality and performance of the original part on the listed vehicles. That OE-style design focus supports a direct-replacement repair for the specified Cadillac HVAC applications.

Related reading

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2005CadillacCTSMainTo VIN 50155651; Mode; Packaging Type: Box
2005CadillacSRXMainTo VIN 50155499; Mode; Packaging Type: Box
2004CadillacCTSMainHVAC Blend Door Actuator for mode selection in box packaging.
2004CadillacSRXMainHVAC Blend Door Actuator for mode selection in box packaging.
2003CadillacCTSMainHVAC Blend Door Actuator for mode selection in box packaging.
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
25740394ADS4223APBDA0215