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Parts for your 2020 Lexus Is-Sway bars & links
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2020 Lexus IS sway-bars-&-links — what they are and when to service them
Technical sources confirm the 2020 Lexus IS is fitted with front and rear stabiliser (sway) bars and stabiliser link assemblies. The Lexus IS Repair Manual for the GSE3#/AVE30 series (Chassis – Suspension – Front/Rear Stabiliser Bar), the Lexus New Car Features manual (Suspension), and the Lexus Electronic Parts Catalogue all show conventional stabiliser bars with links and D‑bushes across 2020 IS variants, including IS300 and IS350, with or without AVS. So yes—sway bars and links are absolutely relevant to this model.
On a 2020 Lexus IS, the sway bars tie the left and right suspension together to resist body roll in corners. The links connect each bar to the control arm or strut, letting the bar twist and keep the car flatter through bends. Less roll means better tyre contact, tidier steering feel, and more confidence on winding Kiwi and Aussie roads. The D‑bushes clamp the bar to the subframe and allow it to rotate quietly.
Because they work hard over potholes, corrugations, and speed humps, the links and bushes are the usual wear items. Typical clues they’re tired include a clunk over small bumps, a light knock when turning into driveways, vague turn‑in, or a squeak from the front on slow undulations. A quick visual will often show split link boots or compressed, shiny D‑bushes.
- Inspection: Check at every service or ~20,000 km. Look for torn boots, play at the link ball joints, perished D‑bushes, and bar-to-subframe movement.
- Replacement: Links are usually replaced in pairs per axle. Always use new self‑locking nuts, snug everything at normal ride height, and torque to spec from the Lexus manual.
- Bushes: If there’s squeak/knock, fresh D‑bushes are a quick, low‑cost win. A light silicone‑safe lubricant can help diagnose noise, but long term fix is new bushes.
- Alignment: Changing links or D‑bushes won’t alter wheel alignment, so no alignment is needed unless other suspension work is done.
- Upgrades: Thicker bars and polyurethane bushes can sharpen cornering, though cabin noise and ride firmness may increase.
For owners in coastal areas, a periodic rinse of the underbody helps slow corrosion on hardware. If the IS feels floaty or develops a knock that’s worse over sharp bumps, getting the sway bars & links checked is a smart first step before chasing shocks or tyres.
Popular questions about 2020 Lexus IS sway-bars-&-links
Do worn sway bar links make the IS feel loose on turn‑in?
Yes. As link joints wear, the bar can’t load up as quickly, so the first part of the steering feels a bit lazy and the car may clunk over small bumps. Fresh links restore that crisp, planted feel without changing ride height or alignment.
How long do sway bar links and bushes typically last?
On most 2020 IS cars, links and D‑bushes can last anywhere from 60,000 to 120,000 km, depending on road conditions and driving style. Frequent speed humps, rough rural lanes, and heavy loads tend to shorten their lifespan. Regular inspections will catch issues early.
Will replacing sway bar links require a wheel alignment?
Not usually. Because links and D‑bushes don’t alter camber, caster, or toe, an alignment isn’t required unless other suspension components are touched. If there’s uneven tyre wear or the steering wheel isn’t centred, an alignment check is still worthwhile.
