Parts for your 2020 Holden Astra-Rack boots

2020 Holden Astra rack boots: what they do and how to look after them

Yes — the 2020 Holden Astra does use rack boots. Technical references including GM Global Service Information for the Astra K/BK platform and the Holden/GM Electronic Parts Catalogue list bellows-style steering gear boots (often called rack boots or gaiters) fitted to both ends of the electric power steering rack. Parts catalogues from OEM and aftermarket suppliers also show dedicated boot kits for this model.

On the Astra, the rack boots act as flexible dust and moisture barriers over the inner tie rods and the ends of the steering rack. They keep grit and water out, protect the rack seals and inner joints, and allow full steering movement without binding. Because the Astra runs electric power steering (no hydraulic hoses or fluid), the boots don’t hold fluid, their job is strictly to shield the moving bits and keep grease clean.

As part of regular servicing, the boots should be inspected every time the vehicle is on a hoist. Look for splits, perished rubber, loose or missing clamps, and any sign that road grime is getting past the bellows. If a boot is torn, replace it promptly — contaminated inner tie rods wear quickly and can cause play, knock over bumps, vague steering, and uneven tyre wear.

• Tell-tale signs: visible tears, grease flung onto the control arm or subframe, sand or water inside the bellows, new steering play or notchiness.
• Service tips: replace boots in pairs if they’re the same age, use proper crimp/ear clamps (not cable ties), ensure the bellows aren’t twisted, and re-grease the inner joint if the old boot was compromised.
• Alignment: removing the outer tie rod end disturbs toe, so a wheel alignment is recommended after boot replacement.

There’s no set kilometre interval for replacement — condition is everything. In Aussie and Kiwi conditions, a thorough check at each service is smart, and any damage should be sorted straight away to stay roadworthy and protect the steering gear. For owners chasing OE procedure and torque specs, workshop literature under “Steering Gear Boot” and “Inner Tie Rod Replacement” in the GM service manual covers the correct steps.

Does the 2020 Holden Astra actually have rack boots?

It does. GM’s workshop manual for the Astra K/BK and the Holden EPC both detail bellows-type steering gear boots on the electric rack, and parts listings show replacement boot kits for the model year.

How often should the rack boots be replaced?

They’re not mileage-based items. Inspect at every service and replace immediately if torn, perished, or if clamps are loose. Keeping contaminants out preserves the inner tie rods and the rack itself.

Do you need a wheel alignment after replacing rack boots?

Yes. The job involves removing the outer tie rod end, which affects toe. A proper alignment afterwards avoids crooked steering and uneven tyre wear.