A steering knuckle is a crucial component in a vehicle's suspension system. It connects the wheel hub to the suspension and allows the wheels to pivot when turning. This part helps maintain proper alignment and stability while driving, ensuring smooth handling and control. Typically made from cast iron or aluminum, steering knuckles are designed to withstand significant forces during operation. They are often found in conjunction with other components like control arms and ball joints, which work together to support the vehicle's weight and facilitate movement. Proper maintenance of the steering knuckle is essential for safe driving.