Parts for your 2018 Toyota Avensis-Rack boots

2018 Toyota Avensis rack boots (steering rack gaiters): purpose, care and when to replace

Based on Toyota’s service literature for the T27-series Avensis (the 2018 model) and the Toyota Electronic Parts Catalogue illustrations for the steering gear, this vehicle is fitted with rack-and-pinion steering that uses bellows-style rack boots (also called steering rack gaiters). So yes—rack boots are relevant and used on the 2018 Toyota Avensis.

On the Avensis, rack boots do a simple but crucial job: they seal the inner tie-rod joints and the rack bar from road grit, water and dust, while keeping grease where it needs to stay. Whether the car runs electric power steering or hydraulic assist, the moving joints at each end of the rack need a flexible barrier. Those concertina boots flex with steering movement, stop contamination, and help the steering feel smooth and precise.

Because they live close to the road, rack boots cop stone strikes, UV, heat and the odd splash of engine oil. Over time they can crack, split or go soft. Once torn, water and grit work their way onto the inner tie rod and rack bar, chewing out grease and accelerating wear. Left long enough, that can mean notchy steering, clunks on turn-in, or premature rack and inner tie-rod replacement—none of which is cheap, and it can also lead to a WOF or rego knockback.

Good practice on a 2018 Avensis is to inspect both rack boots at every routine service (typically every 12 months or 15,000 km in AU/NZ, or sooner if driving on gravel or salted roads). Look for splits at the folds, loose or missing clamps, grease seepage, or moisture inside the boot. If damage is found, replace the boot promptly and re-grease the joint as specified in the service information.

Replacement is a straightforward job for a competent tech: remove the tie-rod end, slide off the old boot and clamps, clean and re-grease the inner joint, fit a quality OE or OEM boot, then secure with proper clamps (skip cable ties). Because the tie-rod end is disturbed, a wheel alignment is recommended to keep tyre wear even and steering true. If the rack has play or corrosion under a torn boot, plan on inner tie-rod or rack repairs at the same time to save a second visit.

• Common signs it’s time: visible splits, oily mess around the boot, dirt or water inside, new clunks or notchy steering, or a failed inspection report.
• Tips: inspect after off-road or flood driving, avoid solvents on rubber, and replace boots in pairs if age-related cracking is evident on both sides.

Does the 2018 Toyota Avensis have rack boots?

Yes. The T27 Avensis uses a rack-and-pinion steering assembly with bellows-style boots on each end of the rack. Toyota’s own repair procedures and EPC diagrams show the steering gear boot/gaiter covering the inner tie-rod joints to keep contaminants out and lubricant in.

They’re a normal wear item and are checked during routine servicing and roadworthiness inspections across Australia and New Zealand.

How often should rack boots be replaced on a 2018 Avensis?

There’s no fixed interval—replace on condition. Have them inspected at every service (about every 12 months or 15,000 km). If a boot is torn, perished, loose at the clamp, or contaminated inside, replace it straight away to prevent inner tie-rod or rack damage.

In harsher use—gravel, coastal salt, or lots of stop-start city grime—ask for more frequent checks.

Can the rack boots be replaced at home, and do they need a wheel alignment?

With the right tools and care, a capable DIYer can do it, but many owners prefer a workshop to ensure correct re-greasing, proper clamps and no damage to the inner tie rod. Because the tie-rod end is removed or adjusted, a wheel alignment is recommended afterward to protect tyres and keep the steering straight.