Parts for your 2006 Toyota Bb-Rack boots

2006 Toyota bB rack-boots: what they do and when to replace them

Yes, the 2006 Toyota bB uses rack-boots. Toyota’s Electronic Parts Catalogue for the QNC20/QNC21/QNC25 bB models lists left- and right-hand steering gear boots (often called rack boots or bellows) as serviceable parts on the rack-and-pinion assembly. The Toyota Repair Manual for the bB generation released in 2005 also specifies inspection of the steering rack boots during routine steering checks. Those technical sources confirm the part is fitted and relevant on this vehicle, whether it’s running electric-assist or hydraulic power steering—the rack still needs boots to protect the inner tie rods and rack bar.

On a 2006 bB, the rack-boots sit at each end of the steering rack, acting like flexible dust covers. They keep grit, water and road grime out of the inner tie rod joints and the rack itself, and they hold the correct lubrication in. When a boot splits, the inner joint can wear rapidly, leading to play in the steering, uneven tyre wear, and potential roadworthy/WOF issues.

For day-to-day ownership, it’s smart to have the rack-boots checked at every service or at least every 10,000–15,000 km. A quick look for cracks, missing clamps, or wetness is usually enough. If the bB variant uses electric power steering, you’ll typically see grease if there’s a problem, on hydraulic systems, any oil inside a boot could point to a leaking rack seal. Either way, a damaged boot should be replaced promptly to save the inner tie rod and rack from premature wear.

Replacement is straightforward for a pro and a tidy DIY job for the confident: wheels off, outer tie rod end loosened, old boot off, new boot on with proper clamps, then refit and align. Because toe settings change when disturbing the tie rod, a wheel alignment after boot replacement is a must. Use quality clamps (not generic cable ties), and don’t overpack the boot with grease—follow the workshop spec. If an inner tie rod has any play, replace it at the same time as the boot to keep steering feel tight and true.

• Tell-tales of a failing rack-boot: steering shimmy, knocking over bumps, visible splits, dirt inside the bellows, or uneven tyre wear.
• Best practice: inspect regularly, replace in pairs if aged, and align the front end after any steering work.

Popular questions about 2006 Toyota bB rack-boots

Do all 2006 Toyota bB models have rack-boots?
Yes. Regardless of trim or steering assist type, the 2006 bB uses a rack-and-pinion setup with a protective boot on each side. The boots shield the inner tie rods and rack from grime and moisture, which helps the steering stay precise and compliant.

How long do rack-boots typically last on a bB?
In normal Aussie and Kiwi conditions they can last many years, but heat, ozone and road debris eventually harden or split the rubber. Plan to inspect them at every service and expect replacement at the first sign of cracking, perishing, or clamp failure.

Will a torn rack-boot fail a WOF or roadworthy?
Often, yes. A split boot allows contamination and can quickly lead to steering play. Many inspections will mark it as a fail item until the boot (and any affected tie rod parts) are replaced and the alignment checked.