Sway bar link
A short rod that ties the sway bar to the suspension so the car leans less in turns.
In plain English
The sway bar, also called a stabilizer bar or anti-roll bar, is a steel bar that runs across the car and joins the left and right sides of the suspension. When the car leans in a turn, the bar twists and pushes back, which keeps the body flatter. A sway bar link, or end link, is the short rod at each end of the bar that attaches it to the suspension, usually at the control arm (a hinged suspension arm) or the strut (the shock absorber and spring unit). Each link has small joints or rubber cushions called bushings at its ends, and those are the parts that wear out.
Why it's on your estimate
A shop recommends new links when the joints or bushings have become loose or a link has snapped. The usual signs are a clunk, knock, or rattle from one corner of the car over bumps and rough roads, and more body lean than you are used to in turns or lane changes. Other worn suspension parts make similar noises, so the looseness should be traced to the link itself.
How urgent is it?
Fix soon
A worn link that only rattles is mostly an annoyance, and the car can still be driven while you arrange the repair. It becomes more serious once a link is broken or disconnected, because the sway bar stops working on that end and the car leans more and feels less stable in quick turns, lane changes, and on highway ramps, so slow down for corners until it is fixed.
Questions to ask the shop
- Which link is worn or broken (front or rear, left or right), and can you show me the looseness?
- Is it the link itself or the sway bar bushings, and should the link on the other side be replaced at the same time?
- Did you check the other suspension parts on that corner that could cause the same noise?
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