A control arm is a crucial component of a vehicle's suspension system. It connects the chassis to the wheel assembly, allowing for controlled movement of the wheels while maintaining stability. This part helps absorb shocks from the road, ensuring a smoother ride and better handling. Control arms come in various designs, including upper control arms and lower control arms, each serving specific functions. They are typically made from materials like steel or aluminum for strength and durability. Proper maintenance of control arms is essential for vehicle safety and performance, as worn or damaged control arms can lead to handling issues.