Parts for your 2017 Toyota Prius-Rack boots

2017 Toyota Prius rack-boots: what they do and when to replace them

Technical sources confirm the 2017 Toyota Prius (XW50) uses steering rack boots. Toyota’s service information (TIS repair manual for the 2017 Prius) details the electric rack-and-pinion steering assembly with bellows-style boots on each side of the rack, and the Toyota Electronic Parts Catalog lists “Boot, Steering Rack” in parts group 45535 for this model. Aftermarket catalogues for the XW50 also supply compatible rack boot kits, further verifying fitment.

On the 2017 Prius, rack boots (also called bellows or gaiters) protect the inner tie rod joints and the rack bar from road grit, water, and dust. They keep the grease where it belongs and stop contaminants from chewing out the joint or the rack’s internal bushings. Because the Prius runs electric power steering (no hydraulic fluid), keeping the boots intact is one of the key defences against premature steering wear and annoying play or noise.

As part of routine servicing, owners benefit from a quick look at both boots whenever the front end is raised—think every 10,000–15,000 km service. Any oil-like residue, splits, loose clamps, or accordion sections that look perished call for prompt replacement. Driving long with a torn boot lets water and grit in, which can fast-track inner tie rod and rack damage.

• Typical symptoms of a failed boot: visible cracking, grease flung onto the subframe, a damp or gritty inner tie rod area, or a faint clunk on steering input.
• Replacement tips: use OE-style clamps, avoid twisting the boot, and seat it fully on the rack and tie rod shoulders. If an inner tie rod is disturbed, a wheel alignment is recommended.

Replacement is straightforward for a trained tech: remove the outer tie rod end, slide the old boot off, clean the area, then fit the new boot with fresh clamps. Marking the outer tie rod position on the threads helps keep toe close enough to drive to alignment if needed. Given the modest cost of boots versus a steering rack, proactive replacement when any cracking appears is smart money.

With Australia and New Zealand roads and weather in the mix—heat, UV, and the odd splash through standing water—fresh, well-clamped rack boots help the Prius steer quietly and precisely for many kilometres.

Do all 2017 Toyota Prius models have rack boots?

Yes. Technical documentation for the XW50-series Prius specifies a rack-and-pinion electric power steering unit with bellows-type boots on both sides of the rack. The Toyota Electronic Parts Catalog also lists “Boot, Steering Rack” for this model range.

How often should rack boots on a 2017 Prius be checked or replaced?

Inspection at each regular service is sensible—about every 10,000–15,000 kilometres. Replacement is advised at the first sign of cracking, splits, loose clamps, or contamination. Many last years, but climate, UV, and road debris can age them faster.

Can a 2017 Prius be driven with a torn rack boot?

It can be driven short-term, but it’s not ideal. A torn boot exposes the inner tie rod and rack bar to grit and water, which can accelerate wear and lead to play, noise, or costly rack repairs. Replacing the boot promptly and checking alignment is the safer call.