Key Case Upper 4B

About this product

The Key Case Upper 4B (#SU003-03945) is crucial in the Lock Cylinder Set system, serving a dual role as a protective shell and a body part that houses the key mechanism of your Toyota vehicle. It maintains the integrity of the inner lock cylinder and key, safeguarding it from external particles or sudden impacts. Genuine Toyota Key Case Upper 4B (#SU003-03945) offers optimal compatibility with your vehicle, backed by Toyota's genuine parts warranty. When this part becomes worn or damaged, it could potentially compromise the lock system's functionality, leading to issues with vehicle security and operation. Hence, periodic replacement is essential for maintaining the reliability of your vehicle's locking system. The Key Case Upper 4B (#SU003-03945) thus contributes significantly to the safety of the vehicle by ensuring a robust and fully functional lock cylinder set system.