Upper control arms are essential components of a vehicle's suspension system. They connect the vehicle's chassis to the wheel assembly, allowing for controlled movement of the wheels during driving. This helps maintain proper alignment and stability, especially when navigating turns or uneven surfaces. These parts are typically made of metal and come in various shapes and sizes, depending on the vehicle's design. The upper control arms work in conjunction with lower control arms and other suspension elements, such as shock absorbers and springs, to ensure a smooth ride and effective handling.