Are anti-roll bar bush and stabiliser bar bushing the same thing?

Yes. "Anti-Roll Bar Bush" and "Stabiliser bar bushing" refer to the same car part. Other common names include Stabiliser bar bushing, Stabiliser Bar Bush, Sway Bar Bush. The part is the same regardless of which name is used.

What are the symptoms of worn anti-roll bar bushes?

Worn anti-roll bar bushes typically cause knocking or clunking noises over bumps and during cornering, along with vague or less precise handling. Perished or split rubber bushes allow the stabiliser bar to move, which is where the noise comes from.

What do anti-roll bar bushes do and why do they wear out?

The bushes cushion and locate the anti-roll bar (stabiliser bar) where it mounts to the body, helping keep the car stable and level through corners. The rubber gradually perishes, cracks or compresses with age, heat and road salt, so the bushes wear out and need replacing.

How do I choose the correct anti-roll bar bushes for my car?

Anti-roll bar bushes are sized to the diameter of your stabiliser bar and differ between the front and rear, so the right part depends on your exact vehicle. Enter your registration above to see front anti-roll bar bushes and other options confirmed to fit, and it is good practice to replace them in pairs.

How much do anti-roll bar bushes cost to replace?

The price of an anti-roll bar bush depends on your exact vehicle and the brand you choose. Enter your registration above to see parts confirmed to fit, then compare prices from the brands we stock on this page. Free UK delivery on orders over £99.

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Anti-Roll Bar Bush buying guide — what to know before you buy

Anti-roll bar bushes (stabiliser bar bushes) locate the anti-roll bar to the vehicle's subframe or body, allowing the bar to rotate slightly as the suspension compresses on one side during cornering. Worn bushes cause knocking or clunking from the suspension on uneven roads and allow the anti-roll bar to move out of its correct position.

What anti-roll bar bushes do

The anti-roll bar connects the left and right suspension on an axle. When one wheel is pushed up (e.g., in a corner, when body roll tries to raise the outer wheel and drop the inner wheel), the bar twists, transmitting the load across the axle and reducing the difference in compression between the two sides. This resists body roll and keeps the vehicle level in corners.

Bushes at the central mounting points allow the bar to rotate in its clamps as it twists, without transmitting high loads into the body. Worn or dried-out bushes crack and split, losing the ability to cushion vibration and allowing the bar to knock against its clamps.

Failure symptoms

A knocking or clunking noise from under the front or rear of the vehicle when driving over speed bumps, through dips, or on rough road surfaces is the most common presentation. The noise is often more pronounced when cornering. The sound can be difficult to distinguish from worn drop links — the anti-roll bar end links — which fail more frequently and should always be inspected at the same time.

Excessive body roll in corners — more pronounced than expected for the vehicle type — can also indicate worn anti-roll bar bushes, though this is a less reliable indicator since many factors affect body roll.

Knocking or clunking over bumps or cornering
Noise worse in cold weather (hardened rubber)
Visible cracking or splitting of the bush
Excessive body roll in corners
Bar clearly displaced from its central position

Replacement

Anti-roll bar bushes are a simple and inexpensive repair. The central mounting bushes require the anti-roll bar to be freed from the drop links (which is usually the more involved part of the job on corroded underside hardware). Polyurethane bushes are available as an upgrade to rubber — they are more durable and firmer, improving handling, but can transmit more noise to the cabin on rough roads. Use the registration lookup to confirm the correct bush size and inner diameter for your anti-roll bar.