Parts for your 2015 Lexus Is-Sway bars & links

2015 Lexus IS sway-bars-&-links — what they do and when to service them

Technical sources confirm the 2015 Lexus IS range (IS 250, IS 350 and IS 300h) is fitted with front and rear stabiliser (sway) bars and end links. References: Lexus Repair Manual (TIS) 2014–2016 IS Front Suspension “Front Stabiliser Bar” and Rear Suspension “Rear Stabiliser Bar” sections, Lexus New Car Features (NCF) for 2014 IS, Suspension chapter, and Toyota/Lexus Electronic Parts Catalogue listings for “Stabilizer Bar” and “Stabilizer Link” assemblies for XE30 IS models.

On this IS, the sway-bars-&-links team up to keep body roll in check and steering nice and crisp. The bar ties the left and right suspension together, and as the car leans into a corner, it twists to resist that roll. That means flatter cornering, more confident lane changes on the motorway, and a stable feel over bumpy country roads. Lexus tuned the IS for a sweet balance, so the stabiliser gear helps it feel planted without beating up the passengers.

The hardware is straightforward: a tubular steel bar is clamped to the subframe with D-bushes, and short end links with ball joints connect the bar to the control arms or struts. There’s one set front and another at the rear. The links and bushes are the usual wear items. When the rubber hardens or the link joints loosen, the bar can’t do its job as cleanly, and little knocks start to creep in.

As part of routine servicing, it’s smart to inspect the sway-bars-&-links every 10,000–15,000 km. Look for cracked or oil-swollen D-bushes, torn dust boots on the links, and any free play when the link is levered. A quick road test over speed humps can reveal tell-tale clunks. Typical signs of trouble include:

• Knocking over bumps or driveway entries
• Extra body roll or vague turn-in
• Rattles from low-speed, uneven surfaces

If replacement’s needed, doing links in pairs (left/right on the same axle) keeps handling even. OEM-style rubber bushes ride quietly, polyurethane offers a sportier feel but can add a bit of noise if not greased correctly. Torque fasteners at normal ride height so the bushes aren’t preloaded. A wheel alignment usually isn’t required for links or D-bushes, but a post-repair alignment check is a good idea if other suspension work has been done or the steering feel has changed. Most shops will knock over front or rear links and bushes in about an hour or so per axle. Aftermarket adjustable bars are an option if the car’s lowered or runs wider tyres, though the stock setup suits daily driving brilliantly.

Popular questions about 2015 Lexus IS sway-bars-&-links

How can someone tell if the sway bar links are worn on a 2015 Lexus IS?
Common clues are a light clunk over speed humps, a rattle at parking speeds on rough surfaces, or a touch more body roll in quick lane changes. In the workshop, movement in the link ball joints when levered, or torn/dry boots, confirms it’s time to replace.

How often should the sway bar bushes and links be replaced?
There isn’t a fixed interval. Many last 60,000–120,000 km, depending on road quality and driving style. Inspect them at each service and replace on condition—cracked bushes, noisy or loose links, or handling changes are the triggers.

Does a wheel alignment need doing after sway bar link or bush replacement?
Generally, no. Replacing links and D-bushes doesn’t alter alignment angles. Still, if other suspension components were disturbed or the car feels different afterwards, an alignment check is cheap insurance.