A anti roll bar bush is an essential part of the suspension system of a vehicle. The job of the anti-roll bar is to balance movement of the vehicle when cornering and minimising side to side movement, preventing the vehicle from leaning or rolling over. It is particularly useful in high wind situations. These are fitted on the front and rear of the suspension.
The bushes on an anti-roll bar are made of a strong rubber and secure the anti-roll bar in place. They are always fitted to the front suspension of the vehicle, but it’s becoming more common for them to also be fitted to the rear suspension too. They take a large amount of strain from the forces of the anti-roll bar. This means that over time they will wear thin and become less effective or crack and dry out through use. They’re also subject to disintegration if they come in to contact with oil.
It’s recommended that anti-roll bar bushes are checked and replaced regularly. Both sides should be replaced at the same time as if one bush is damaged, its pair will most likely be damaged too.