Keep cabin airflow and temperature under precise control with the Dorman - OE Solutions HVAC Blend Door Actuator (P/N 604-879). This small electric motor drives an HVAC air door to the commanded position, directing conditioned air through the ductwork for consistent climate operation. It installs as a direct-fit replacement for the 2006-2011 Acura CSX and 2006-2011 Honda Civic — see the Buyer's Guide tab for the full engine-level fitment.
MAIN position: this is the MAIN air door actuator. Many vehicles use several HVAC door actuators for different positions and functions, so review the application notes to confirm this matches the actuator you need to replace.
- Direct replacement: engineered to drop in like the original air door actuator on the listed applications.
- Durable construction: designed and tested to strict standards to help resist wear and electrical burnout for reliable, long service.
- Trustworthy quality: backed by a team of experts and engineers in the United States and more than a century of experience.
Signs the original actuator may need replacing include clicking or knocking from behind the dash, air that won't change temperature or direction, or an HVAC control that won't hold its setting.
Interchange: APBDA0225 · 79140SNAA01 · DA1316 · ADA603
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this blend door actuator do?
It's a small electric motor that drives an HVAC air door to the commanded position, directing conditioned air through the ductwork for consistent climate control.
Which vehicles does P/N 604-879 fit?
It's a direct-fit replacement for the 2006-2011 Acura CSX and 2006-2011 Honda Civic. Check the Buyer's Guide tab to confirm the fit for your vehicle.
Which actuator position is this?
This is the MAIN air door actuator. Many vehicles use several HVAC actuators, so review the application notes to verify it matches the position and function you need.
What are signs my actuator has failed?
Common signs include clicking or knocking behind the dash, air that won't change temperature or direction, or an HVAC control that won't hold its setting.
What other part numbers does this replace?
It cross-references APBDA0225, 79140SNAA01, DA1316, and ADA603.
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