Anti Roll Bar Links

A sway bar link is the short connector between the end of the sway bar and the suspension. It carries load from one side of the vehicle across to the other when the body leans, and everything the bar does depends on it.

They are the smallest and hardest working part in the assembly, which is why sway bar links are among the most replaced components on any vehicle.

What Is a Sway Bar Link and What Does It Do

A sway bar resists vehicle sway by twisting, and it can only twist if something applies force to its ends. Applying that force is the link's entire job.

When one wheel rises relative to the other, the link on that side pushes or pulls the end of the bar, the bar winds up along its length, and it pushes back against the movement. Without the links, the bar is a piece of steel bolted to the chassis doing nothing at all.

Because the link sits between the bar and a suspension component that never stops moving, it also has to pivot through its own arc as the suspension travels. That requires a joint at each end, and those joints are what wear out.

Any movement in a worn link is load the bar never receives, so the vehicle leans further and settles more slowly than the bar's rating suggests. That is also why fitting a heavier sway bar to a vehicle with tired links rarely delivers what people expect.

The Rattle That Tells You a Sway Bar Link Has Worn

Worn links produce one of the most recognisable noises in suspension work.

It is a light, fast rattle or knock rather than a heavy thud, and it follows small sharp inputs rather than big ones. Car park speeds over broken bitumen, driveways, speed humps and expansion joints are where you hear it, and it often disappears entirely on smooth road.

That character is what separates it from the other suspects. Sway bar bushes at the centre of the bar squeak and creak rather than rattle, and the noise changes with the weather, turning up on cold mornings and after rain. Control arm bushes make a heavier, duller thud that worsens under braking. Ball joints knock when the wheel is turned and loaded rather than when the suspension moves vertically.

Checking is quick enough that it is worth doing before ordering. With the vehicle safely supported, grab the link and try to move it by hand, since play at either end means the joint has gone and you can usually see a split sway bar link boot or cracked bush at the same time.

Symptoms of a Worn Sway Bar Link

• A rattle or knock from the wheel area over small sharp bumps, worst at low speed
• Noise that gets worse on broken road surfaces and disappears on smooth bitumen
• A knock felt through the steering wheel when turning at low speed
• More vehicle sway through corners, with the body slower to settle
• Play you can feel by hand at either end of the link
• A split or torn boot at a link joint, or visible cracking in a bush
• A bent link, or one hanging loose after the joint has separated
• An adjustable sway bar whose settings no longer feel different from each other

Broken Sway Bar Link: Is the Vehicle Still Safe to Drive

A broken sway bar link is not the same as a broken ball joint, so it is worth keeping in proportion rather than panicking.

If a link separates, the bar loses its connection to the suspension on that side and simply stops working there. The vehicle does not become undriveable, the wheel stays attached, and steering and braking are unaffected. What you lose is resistance to vehicle sway, so the body leans considerably more in corners and feels vague and unsettled, particularly in an emergency lane change where you would most want it to behave.

The real risk is what the loose end does next, because a broken link is still bolted at one end and free at the other, which means it can swing into a tyre, a brake line or a CV boot. If one has broken, remove the loose piece rather than leaving it hanging while you arrange the repair.

Drivable in the short term at moderate speed, then, with the understanding that the vehicle handles worse than you are used to, and it is not something worth leaving for months.

Sway Bar Link Pins, Bushes and Boots

Links are built two ways, and which you have decides whether anything can be serviced.

Ball jointed links use a sealed socket at each end with a rubber boot over it, looking much like a miniature tie rod end. Nothing inside can be replaced, so once the joint develops play or the boot splits, the whole link gets replaced.

Bushing style links use a sway bar link bush at one or both ends, either pressed into an eye or stacked over a stud with washers and a nut. On these, sway bar link bushings are a wear item you can replace on their own without buying a new link, which is a fraction of the cost. Threaded rod links and many 4WD and older vehicle designs work this way.

Sway bar link pins are the other half of that arrangement. The pin is the surface the bush works against, so a corroded or pitted pin will chew through a new bush quickly. Front sway bar link pins are worth inspecting whenever the front sway bar link bushes come out, because fitting fresh bushes to a pitted pin wastes them.

Fixed, Adjustable, Extended and Universal Sway Bar Links

Direct replacement links restore what the vehicle left the factory with, and for a standard vehicle with worn links that is exactly what you want.

Adjustable sway bar links have a threaded body that can be set with a spanner while the vehicle sits on its wheels. That lets the length be dialled in precisely after any ride height change, and it lets you use the full range of an adjustable bar rather than whichever settings the link happens to allow.

Extended links restore correct length on a raised vehicle, front or back, where the factory link is now too short and holds the bar under permanent tension.

Universal sway bar link options cover custom and modified applications where no vehicle specific part exists, sized by length and stud diameter rather than by a fitment lookup.

Sway bar link kits supply both sides together, which is how they should be bought, since one new link against one worn one leaves the bar working unevenly across the vehicle.

Getting Sway Bar Link Length Right

A link has one correct length, set by where the two mounting points sit with the vehicle at its normal ride height.

Change the ride height and those points move apart or closer together. Raise a vehicle and the factory link is now too short, holding the bar under tension rather than letting it sit neutral. That is preload, and it means the bar is part way through its travel before the vehicle has moved and cannot work evenly side to side.

Set adjustable links with the vehicle on all four wheels at ride height, never at full droop on a hoist. Neutralise them so both ball ends sit in the middle of their range, which is where the joint has full articulation, and check both sides measure the same. Never force a link into place to make it reach, because a preloaded link puts constant load through the bar, the mounts and itself until one of the three gives way.

If you are not sure which way the link runs on your vehicle, a front sway bar link diagram for your model is worth finding before you start, since the orientation differs more between platforms than people expect.

Sway Bar Link Replacement Cost and Why Quotes Vary

Sway bar links are among the least expensive suspension parts on any vehicle, and the labour is minimal since nothing needs pressing and no wheel alignment is required afterward.

Each link is held by a nut at each end, and on a good day both sides are done inside an hour. The variable is corrosion, because links live in the worst position on the vehicle for road grit and moisture, and a seized nut turns a quick job into cutting the old link off. Workshops price that risk in, which is why front sway bar link replacement cost varies more than the parts bill would suggest.

Replace them in pairs, because both sides have covered the same kilometres, the parts are cheap, and doing one side means going back under the vehicle for the other before long. If the sway bar bushes are being done at the same time, the combined job costs very little more than either on its own.

Replacing a Sway Bar Link Without Snapping the Stud

This is one of the more approachable jobs on the vehicle, since the link unbolts at each end and the new one goes straight in.

Expect a fight at the nuts, where penetrating fluid and patience beat force. Where a nut will not move, cutting the link off is the correct answer since it is being replaced anyway. Many links have a hex recess in the end of the stud so you can hold it while turning the nut, which is the trick that makes the job possible when the whole assembly wants to spin.

Do not overtighten anything, because crushing a bush flat or over torquing a ball joint stud removes the compliance the link needs in order to pivot.

Grease any polyurethane bushes on assembly with a silicone or PTFE based lubricant rather than a lithium or petroleum based one, which can degrade the material over time.

Do both sides, check the sway bar bushes at the centre of the bar while you are underneath, and recheck the fasteners after a few hundred kilometres.

Find Sway Bar Links for Your Vehicle

Select your vehicle to see the front sway bar links, rear sway bar links, adjustable options and complete kits available for it. Every Nolathane sway bar link is backed by our warranty, a fitment guarantee and 60 day returns.