HomeDorman 604-345 HVAC Blend Door Actuator - Main
Part #: 604-345

Dorman 604-345 HVAC Blend Door Actuator - Main

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⚙️ 4 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Toyota, Tacoma
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dorman HVAC Blend Door Actuator 604-345

The Dorman HVAC Blend Door Actuator 604-345 is designed specifically for Toyota Tacoma models, providing reliable control of your vehicle's heating and cooling system. This actuator features a rotary switch activation type and durable plastic construction to ensure consistent performance.

  • Rotary (Rotatorio) switch activation for precise HVAC control
  • 8 male blade terminals (Aspa) for secure electrical connections
  • Constructed from durable plastic material for long-lasting use
  • Package includes 1 air door actuator
  • Compatible with Toyota Tacoma models

Detailed Product Description

The Dorman 604-345 HVAC Blend Door Actuator is engineered to regulate the airflow blend door within the HVAC system of Toyota Tacoma vehicles. Its rotary switch activation type allows for smooth and accurate adjustment of air temperature by controlling the blend door position. The actuator is equipped with 8 male blade terminals, ensuring a reliable electrical connection that supports consistent operation. Made from high-quality plastic, this actuator balances durability with lightweight design, contributing to efficient HVAC system performance.

Common Applications and Problem Resolution

  • Restores proper airflow temperature control in Toyota Tacoma HVAC systems
  • Eliminates issues with inconsistent cabin heating or cooling
  • Resolves blend door actuator failure symptoms such as unusual noises or unresponsive temperature changes
  • Addresses HVAC blend door stuck or non-moving conditions
  • Improves overall climate control system reliability

Installation Notes and Tips

When installing the Dorman 604-345 blend door actuator, ensure the vehicle is powered off and the HVAC system is set to a neutral position. Carefully disconnect the existing actuator’s electrical connector and remove mounting screws. Align the new actuator properly with the blend door shaft and secure it firmly. Reconnect the 8 male blade terminals and test the HVAC system for proper operation before completing installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing dependable performance for Toyota Tacoma HVAC systems. While specific warranty details for part number 604-345 are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. Refer to official Dorman documentation for exact warranty terms.

BrandDorman
Part Number604-345
Switch Activation TypeRotary
Switch Activation TypeRotatorio
Terminal TypeAspa
Terminal TypeBlade
Terminal Quantity8
Terminal GenderMacho
Terminal GenderMale
Contenidos del paquete1 actuador neumático de la puerta
MaterialPlastic
MaterialPlástico
Package Contents1 air door actuator

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
2004ToyotaTacomaMainPackaging Type: Box
2003ToyotaTacomaMainPackaging Type: Box
2002ToyotaTacomaMainPackaging Type: Box
2001ToyotaTacomaMainPackaging Type: Box

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

8710604020ADA764

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.