Connects the sway bar to the suspension, a commonly overlooked replacement item. Sway bar links are a commonly overlooked replacement item on most vehicles. The sway bar link attaches the sway bar to the suspension and "loads" the sway bar when cornering. This loading of the sway bar is what reduces body roll and allows you to keep control of your vehicle. When sway bar links wear out they will commonly make "clicking" noises at low speeds over bumps.