Sway bar links help prevent excessive leaning during turns and keep the vehicle stable by linking the sway bar, also known as the stabilizer or anti-roll bar, to the suspension components. The sway bar rotates as the vehicle turns, stressing sway bar links and bushings. If a sway bar link wears out over time, it needs to be replaced for safe handling of the vehicle. Delphi sway bar links are fatigue-tested to avoid failure, with anti-corrosion cataphoretic coating applied for a long lifespan.