Parts for your 2007 Lexus Is-Rack boots

2007 Lexus IS rack-boots: what they do and when to replace them

Rack-boots are absolutely used on the 2007 Lexus IS (XE20). Lexus’ factory Repair Manual via the Lexus Technical Information System (TIS) lists the bellows-type “steering gear boots” as inspection items in the Steering/Steering Linkage section, and the Toyota/Lexus Electronic Parts Catalogue (EPC) identifies them as “Boot, Steering Rack” on the IS250/IS350 steering gear assembly. Aftermarket and service references (e.g., Haynes-type service guides for 2006–2013 IS models) echo the same. So, they’re relevant, fitted, and worth keeping in good nick.

On this model, the rack-boots (also called bellows or gaiters) sit at each end of the rack-and-pinion housing, wrapping around the inner tie rods. Their job is simple but critical: they keep dust, road grit, water and muck out of the rack and inner joints, and they help retain the correct lubrication around the inner tie rod ball sockets. Whether the car’s built with electric assist or hydraulic variants, the boots are the frontline defence against wear and contamination.

As part of regular servicing in Australia and New Zealand conditions, it’s smart to inspect the rack-boots at every service interval or at least every 10,000–15,000 km. Look for splits, perished rubber, loose or missing clamps, and any signs of contamination at the ends of the boot. If there’s moisture or grit inside the bellows or the boot has collapsed or is oil-soaked, it’s time to replace.

Replacement is straightforward for a trained tech: the outer tie rod end is removed, the old boot and clamps are taken off, the area is cleaned, and a fresh boot with new clamps is installed with the correct orientation. It’s good practice to check inner tie rod play while there, and to organise a wheel alignment if the outer tie rod end has been disturbed. Don’t pack the boot with grease and don’t reuse tired clamps—both can shorten boot life. Quality OE-type rubber lasts longer, especially with harsh UV and road grime here.

If a boot tears and is left too long, grit can chew out the inner joint and potentially the rack itself—an expensive fix compared to a simple boot. Keeping the boots intact helps preserve steering feel, keeps tyre wear predictable, and protects the steering gear for the long haul.

• Inspect at regular services for splits, perishing, and loose clamps
• Replace damaged boots promptly, consider doing both sides together
• Check inner tie rod condition and book an alignment after work

Popular questions

How do I know a rack-boot on my 2007 Lexus IS is failing?

Common clues are visible cracks or splits in the bellows, grease or grime collecting at the ends, and dampness or contamination inside the boot. You might also notice a light knock over bumps if the inner joint has started to wear after running with a torn boot. A quick visual check with the wheels turned lock-to-lock usually shows up any damage.

Can I drive with a torn rack-boot?

Short-term, gentle driving is possible, but it’s not a great idea. A torn boot allows water and grit in, which can rapidly wear the inner tie rod and potentially the rack. That turns a simple, affordable repair into a much bigger bill. Best bet: book a replacement as soon as you spot the tear.

Do I need an alignment after replacing rack-boots?

If the outer tie rod end is removed or adjusted to fit the new boot, a wheel alignment is recommended. Even if the technician counts threads and gets it close, a proper alignment confirms toe is spot-on, protecting tyre wear and keeping the steering feel crisp.