An anti-roll bar (roll bar, anti-sway bar, sway bar,stabilizer bar) is a part of many automobile suspensions that helps reduce the body roll of a vehicle during fast cornering or over road irregularities. It connects opposite (left/right) wheels together through short lever arms linked by a torsion spring.

Sway bar end links are the attachment points between a sway bar and suspension members. Also known as a stabilizer bar or anti-roll bar, the sway bar connects suspension components on either side of the car to minimize body leaning in turns.

Though the sway bars themselves are made of long-lasting, durable steel, the end links incorporate bushings that can fail with age and wear. That can introduce play that causes noise, compromises the sway bar’s effectiveness and may lead to separation. Inboard sway bar bushings, which serve as a hinge, also must be maintained properly.