Description
Product Overview
The Dorman 604-970 rear air door actuator is engineered to replicate the exact fit and function of the original equipment manufacturer (OEM) component for a wide range of vehicle makes and models. Constructed from a precision‑machined metal housing, the actuator delivers smooth, reliable movement of the HVAC blend door, ensuring consistent temperature regulation throughout the cabin. Weighing just 5 ounces and measuring 5.2 x 4.02 x 2.48 inches, it is compact yet robust, meeting strict durability standards to resist electrical burnout and mechanical wear. The part carries multiple OEM references—including SK604970, 277435Z000, 277435Z011, 277437S010, 27743ZP00A, and 27743ZQ00B—making it a versatile solution for many rear HVAC applications.
Usage
Designed for the rear climate control system, this actuator is ideal for passenger vehicles that feature dual‑zone heating and cooling. Whether you are replacing a failed unit after years of service or performing a preventative upgrade, the Dorman 604-970 integrates seamlessly into the existing HVAC assembly. It is suited for both DIY enthusiasts and professional technicians, requiring only basic hand tools and a standard garage diagnostic setup. The actuator operates in a range of temperatures, from cold winter mornings to hot summer afternoons, maintaining precise door positioning for optimal airflow distribution. 
Why Choose Us
Dorman brings over a century of engineering expertise to every component it manufactures. Each actuator undergoes rigorous testing to meet or exceed OEM specifications, guaranteeing a match in fit, form, and function. Our U.S.–based engineering team oversees quality control, ensuring that every unit leaves the factory free of defects and ready for immediate installation. In addition, the part is backed by a comprehensive warranty and supported by a network of knowledgeable customer service representatives who can assist with fit verification and troubleshooting. Choosing Dorman means investing in a product that combines proven reliability with cost‑effective pricing, eliminating the need for expensive dealer‑sourced replacements.
Key Features
- Direct OEM replacement – matches multiple manufacturer part numbers for a perfect fit.
- Machined metal housing – provides superior strength and resistance to wear.
- Compact design – lightweight and space‑efficient for easy installation.
- Durable electrical contacts – engineered to prevent burnout and ensure long service life.
- Backed by Dorman’s 100‑year engineering legacy and U.S. quality assurance.
FAQ
Will this actuator work on my specific vehicle model?
Yes, the Dorman 604-970 is designed to fit a broad range of makes and models. Verify compatibility by entering your vehicle’s year, make, and trim into our online fit‑check tool or consult the application list in the product documentation.
What tools are required for installation?
Installation typically requires a set of basic hand tools such as screwdrivers, a socket set, and a trim removal tool. No specialized equipment is needed, and the process can be completed in under an hour by an experienced DIYer.
Is the actuator covered by a warranty?
Yes, Dorman offers a limited warranty that covers defects in materials and workmanship. Details are provided in the packaging and on our website.
Can I replace the actuator myself without affecting other HVAC components?
Absolutely. The actuator is a stand‑alone component that connects to the existing blend door linkage and electrical harness. As long as the old unit is removed carefully and the new unit is seated correctly, other HVAC parts remain untouched.
How does the machined construction benefit the actuator?
The machined exterior provides a tighter tolerance and stronger structural integrity compared with stamped or molded alternatives. This results in smoother operation, reduced vibration, and a longer lifespan under demanding temperature cycles.
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