Parts for your 2020 Lexus Is-Rack boots

2020 Lexus IS rack boots: what they do and how to look after them

Based on Lexus/Toyota technical documentation, rack boots are fitted to the 2020 Lexus IS. The Lexus Technical Information System (TIS) repair manual for the XE30-series IS (2017–2020) includes a Steering > Steering Gear and Linkage > Rack Boot procedure, and the Toyota/Lexus Electronic Parts Catalog for 2020 IS models (ASE30/GSE31/AVE30) lists “Boot, Steering Rack” and the associated clamps. Those sources confirm the car runs a rack-and-pinion electric power steering (EPS) assembly with a bellows boot on each side of the rack, so rack boots are relevant to this model.

On the 2020 Lexus IS, rack boots (also called steering rack bellows) shield the inner tie rods and the rack housing from grit, water, and road spray. They keep the factory grease where it needs to be, help prevent corrosion on the rack bar, and stop abrasive dust from chewing out the inner joints. Even though the IS uses EPS and isn’t carrying hydraulic fluid in the rack, torn boots still invite contamination that can accelerate wear, cause steering noise, and lead to a WOF/roadworthy fail.

There’s no fixed replacement interval in Lexus schedules, so rack boots are an inspect-and-replace item. A good workshop will check them at every service (about every 10,000–15,000 kilometres), especially if the car sees gravel roads, coastal air, or lots of stop‑start commuting. If the rubber is perished, cracked, weeping grease, or the clamps are loose, replace sooner rather than later.

• Signs they need attention: visible splits or oil/grease on the boot, dirt inside the bellows, clicking or knock over bumps, uneven tyre wear from altered toe, or a failed WOF/roadworthy note for damaged gaiters.

When replacing, do both sides if the rubber is the same age. Always use new clamps and ensure the boot seats fully in the rack and tie rod grooves. Because the outer tie rod end is usually removed to slip the boot on, a wheel alignment is strongly recommended to set toe correctly and protect the tyres. If there’s any play in the inner tie rod joints, tackle that at the same time—labour overlaps nicely. Quality OEM or OE-equivalent boots cope better with heat and ozone, so they’re worth the small extra outlay. Look after the boots and the IS steering stays light, quiet, and precise for the long haul.

FAQs

Does the 2020 Lexus IS have rack boots?
Yes. Lexus TIS repair procedures list rack boot removal/installation for the 2017–2020 XE30 IS, and the Toyota/Lexus parts catalog lists the “Boot, Steering Rack” for 2020 IS variants. They’re standard bellows that protect the rack and inner tie rods.

How often should rack boots be replaced on a 2020 Lexus IS?
They’re not time‑based, replace on condition. Have them inspected at every service. If the rubber is cracked, split, or the clamps are loose, replace promptly to avoid rack wear and a potential WOF/roadworthy knock‑back.

Do you need a wheel alignment after replacing rack boots?
Yes, it’s wise. Boot replacement typically involves removing the outer tie rod end, which can shift toe. A post-job alignment protects tyre life and restores the Lexus steering feel.