Parts for your 2022 Toyota Prius-Rack boots

2022 Toyota Prius rack boots — what they do and when to replace them

Rack boots are absolutely fitted to the 2022 Toyota Prius. Toyota’s service literature and Electronic Parts Catalogue for the XW50 Prius generation (2016–2022) depict a rack-and-pinion steering gear with a bellows-style boot on each side of the rack. Industry terms call them rack boots, steering gaiters, or bellows. With electric power steering on the Prius, these boots aren’t holding hydraulic fluid, they’re there to keep dust, water, and road grit away from the inner tie-rod joints and the rack bar.

The purpose is simple but critical. Each boot seals over the rack housing and inner tie rod, trapping grease where it belongs and keeping contaminants out. That helps the inner tie-rod joint move smoothly, reduces wear on the rack teeth, and avoids corrosion. The concertina folds let the boot expand and contract as the steering moves, and some designs include a small breather to prevent pressure build-up. Toyota’s workshop procedures specify boot clamps to secure both ends so nothing sneaks past.

Servicing-wise, it’s smart to have the rack boots inspected at each scheduled service, or at least every 10,000–15,000 kilometres/12 months. Split or perished rubber, loose or missing clamps, or grease flung onto the subframe are all red flags. Because the Prius uses electric assist, there won’t be power steering fluid weeping from a torn boot, so visual checks really matter. In NZ and Australia, a split steering boot can trigger a WOF/roadworthy fail, so it’s worth catching early.

If replacement’s needed, a technician will remove the outer tie-rod end, slide off the old boot, clean the joint area, and fit a new quality EPDM boot with fresh clamps. Best practice includes:

• Centre the rack so the new boot isn’t twisted at full lock.
• Use proper crimp or ear clamps to maintain a tight seal.
• Check inner tie-rod play while there – replace if loose.
• Perform a wheel alignment after reassembly.

Owners who drive on gravel, through floodwater, or in coastal areas should be extra vigilant, salt and silt are hard on rubber. Genuine or reputable aftermarket boots handle Aussie and Kiwi heat and UV better, and a tidy install keeps steering feel sharp and tyres wearing evenly. Labour is typically under an hour per side, and doing it promptly is far cheaper than a steering rack down the track.

Do all 2022 Toyota Prius models have rack boots?

Yes. Regardless of trim, the 2022 Prius uses a rack-and-pinion steering gear with electric assist, and each side of the rack is protected by a bellows-style rack boot. The boots shield the inner tie-rod joints and rack bar from dust, water, and grit.

Toyota’s parts and service information for the XW50 Prius platform identifies these as serviceable items, with clamps at each end to maintain a proper seal.

How often should the rack boots be checked or replaced on a 2022 Prius?

Have them inspected at every routine service (around 10,000–15,000 km or 12 months). There’s no set replacement interval, they’re replaced on condition. If a boot is split, perished, or the clamps are loose, replace it promptly and get an alignment.

Drivers who see gravel, coastal air, or floodwater should ask for more frequent checks as those conditions accelerate rubber ageing.

Is it safe to drive with a torn rack boot on a 2022 Prius?

It’s not ideal. A torn boot allows grit and water onto the inner tie-rod joint and rack bar, which can lead to premature wear, corrosion, and steering play. It can also cause a WOF/roadworthy issue in NZ or Australia.

Short trips to a workshop are usually fine, but booking a repair soon is the smart move to protect the rack and avoid larger bills.