Suspension Bushings
Bushings are flexible cylindrical cushions fitted between movable components to attenuate vibration and assist in alignment. Typically used between suspension components, bushings are constructed of synthetic rubber, polyurethane, special plastics or aluminum.
Bushings work by transferring the kinetic energy of moving parts into heat. Repeated heat cycles and oxidation eventually causes the bushings to shrink, harden and lose their elasticity. When this occurs, the bushings can no longer adequately attenuate vibration or assist in the alignment of components. The result is increased transmission of noise, vibration and harshness throughout the chassis.