Description
Product Overview
The A-Premium heater blend door actuator is a direct‑fit replacement designed for the Toyota 4Runner Limited (1999‑2002). Manufactured to OEM standards (part numbers 604-349, 8710635070), it features a robust aluminum gear housing and a high‑torque electric motor for precise door positioning. Weighing only 7.7 ounces and packaged in a compact 5.04 x 4.8 x 2.05‑inch box, the unit offers a lightweight yet durable solution that integrates seamlessly with the vehicle’s existing HVAC system.
Usage
This actuator is ideal for restoring full climate control functionality after wear or failure of the original component. Whether you are a DIY enthusiast repairing your own 4Runner or a professional technician servicing a fleet, the part installs in the main temperature position without the need for additional adapters. It performs reliably in extreme temperatures, making it suitable for both hot summer drives and cold winter trips.

Why Choose Us
A-Premium combines advanced design engineering with premium material technology to deliver a product that exceeds standard replacement parts. Each actuator undergoes rigorous testing for torque consistency, noise reduction, and lifespan durability. Our commitment to quality ensures the part meets or surpasses the original equipment specifications, providing peace of mind and long‑term reliability for your vehicle.
Key Features
- Exact OEM fit for Toyota 4Runner Limited 1999‑2002, eliminating modification needs
- High‑torque motor delivers smooth, precise blend door movement for accurate temperature control
- Durable aluminum gear housing resists wear and corrosion in harsh automotive environments
- Lightweight design (7.7 oz) simplifies handling and installation
- Tested to strict automotive standards, ensuring long‑lasting performance and reliability
FAQ
Is this actuator compatible with all 4Runner trims?
The part is specified for the Limited trim of 1999‑2002 models. Other trims may use a different actuator, so verify your vehicle’s VIN or consult a fitment guide.
Do I need special tools to install the actuator?
Installation requires basic hand tools such as a socket set and screwdrivers. No specialized equipment is necessary, and the process can be completed in under an hour.
Will this part affect my vehicle’s warranty?
Because the actuator meets OEM specifications, it is considered a genuine replacement and should not void any existing warranty, provided installation follows manufacturer guidelines.
What is the expected lifespan of this actuator?
With proper installation and normal use, the actuator is designed to last the lifetime of the vehicle’s HVAC system, typically exceeding 100,000 miles.
Can I purchase this part for other Toyota models?
This specific actuator is engineered for the 1999‑2002 4Runner Limited. For other models, please search using the OEM part numbers 604-349 or 8710635070 to find the correct fit.





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