Parts for your 2018 Toyota Avensis-Rack boots

2018 Toyota Avensis rack-boots: what they do and when to replace them

Yes, the 2018 Toyota Avensis (T27) is fitted with rack-boots. Technical sources including the Toyota Avensis T27 Repair Manual (Steering: Steering Linkage/Rack Boot procedures), Toyota’s European Electronic Parts Catalogue (lists “Boot, Steering Rack” within the steering gear and link group for 2015–2018 Avensis), and general service literature such as the Haynes Avensis manual (2009–2018) all specify inspection and replacement of steering rack gaiters/boots. That confirms rack-boots are relevant to this model.

On the Avensis, rack-boots (also called steering rack gaiters or bellows) are the flexible sleeves at each end of the rack-and-pinion. They keep grit, water and road muck away from the inner tie rod and rack seals, while allowing the steering to move freely. Even though the Avensis uses electric power steering rather than a hydraulic system, the boots still do a crucial job: protecting the precision rack surfaces and inner joints so they don’t wear out prematurely.

During regular servicing, a quick look under the front to check the rack-boots is time well spent. A split or perished boot lets contamination in, which can chew out the inner tie rod or score the rack, leading to vague steering, clunks over bumps, and an expensive rack replacement. In Australia and New Zealand, a torn steering gaiter can also lead to a failed roadworthy or WOF.

Best practice is to inspect both boots at each service or every 10,000–15,000 kilometres. Look for cracks in the folds, grease fling on the inside of the wheel, or damp, gritty residue around the inner tie rod. If one boot is damaged, replace it promptly and check the inner tie rod for play while you’re there.

When replacing, choose a quality OE or reputable aftermarket boot designed for the Avensis T27 so the small and large ends seal properly. Many kits include new clamps, use proper clamps rather than generic cable ties, and position them so they don’t foul on full lock. Refit with the rack centred, ensure the boot isn’t twisted, and always get a wheel alignment after disturbing the tie rod locknut. On an EPS rack there’s no fluid to leak, but water ingress is the enemy—keeping those boots intact massively extends rack life and keeps the steering feel tight and tidy.

• Typical signs of trouble: visible splits, grease or dirt inside the boot, knock or play from the inner tie rod, WOF/roadworthy fail notes about “steering gaiters”.

Does the 2018 Toyota Avensis have rack-boots?

Yes. The T27 Avensis uses rack-and-pinion steering with protective bellows (rack-boots) on each side to shield the inner tie rods and rack seals. They’re present across petrol/diesel and body styles for this model year.

How often should rack-boots be replaced?

There’s no fixed interval. Inspect them at every service. Replace as soon as cracks, splits, or loose clamps are found, or if there’s contamination inside. Many owners find original boots last years, but climate and road grit can accelerate ageing.

Can they keep driving with a torn rack-boot?

It’s not recommended. A torn boot lets water and grit into the rack, which can quickly wear the inner tie rod and the rack itself. It may also trigger a WOF/roadworthy fail. Replacing the boot early is far cheaper than replacing the steering rack later.