An anti roll-bar or sway bar is an important component in a vehicle's suspension system. It helps to reduce body roll and improve handling during cornering. There are also other terms that can be used to describe this part of the suspension system. These include stabilizer bar, anti-sway bar, roll stabilizer bar, torsion bar, and sway control bar. Each term essentially describes the same function of the anti-roll bar, which is to prevent the vehicle from leaning too far over during turns. Regardless of the term used, it is essential to maintain the anti-roll bar to ensure the safety and performance of the vehicle.