Parts for your 2017 Holden Commodore-Rack boots

2017 Holden Commodore rack-boots (steering rack bellows)

Based on the Holden VF Series II (2015–2017) Service Manual – Steering section, the GM Global EPC (Electronic Parts Catalogue), and ZF/TRW steering gear documentation used on VF Commodore racks, the 2017 Holden Commodore does use rack-boots (also called steering gear bellows or gaiters). They’re fitted to the rack-and-pinion steering assembly on both electric (EPAS) and hydraulic variants, so the part is relevant to this model year.

On the 2017 Commodore, rack-boots seal each end of the steering rack where the inner tie rods move in and out. Their job is to keep dust, water, and grit away from the rack bar and inner tie rod joints while retaining the grease those joints rely on. Whether the vehicle runs EPAS or a hydraulic setup, the boot acts as a flexible barrier that copes with full suspension and steering travel without splitting—provided it’s in good nick.

If a boot tears, the inner tie rod and rack teeth can cop contamination, which accelerates wear and can create play, knocks over bumps, or a notchy feel at the wheel. On hydraulic racks (where fitted on some variants), fluid found inside a boot usually points to an internal rack seal issue that needs rack reconditioning or replacement, not just a new boot.

As part of regular servicing, it’s smart to inspect the rack-boots at every service or at least every 10,000–15,000 km. Look for splits, perishing, loose clamps, or grease fling. If one side is damaged, replacing boots as a pair is best practice. Use OE-style clamps (not cable ties), seat the boot correctly on its grooves, and avoid twisting the bellows.

• Typical replacement steps (workshop level): lift and support the vehicle, remove the wheel, mark toe position, detach outer tie rod end, slide off old boot and clamps, clean and inspect, fit new boot with correct clamps, reassemble with factory torque specs, then carry out a wheel alignment.
• Alignment is essential after disturbing tie rod components, even if marks were made.

Owners keen on longevity should also keep underbody splash shields intact and avoid deep water crossings where possible—boots handle spray, but prolonged immersion invites trouble.

Popular questions

How can someone tell if the rack-boots on a 2017 Commodore need replacing?
Common signs include visible splits or perishing on the bellows, grease flicked around the inner wheel arch, a light knock over bumps, or a slight dead spot on initial steering input. During servicing, a tech will also check that the boot lips are properly seated in their grooves and that the clamps are tight. Any doubt is reason enough to replace, as contamination damage costs far more than a pair of new boots.

Are rack-boots the same across all 2017 VF Commodore variants?
They’re broadly similar in function, but part numbers can differ between trim levels, engines, and steering gear suppliers. The GM Global EPC lists variant-specific steering gear bellows, so matching by VIN or rack build code is the safest bet. A quality OE or OE-equivalent kit will include the correct boot profile and clamps for the exact rack fitted.

Is it safe to drive with a torn rack-boot?
Short term, it might feel fine, but grit and water can quickly chew out the inner tie rod and rack surfaces. If it’s a hydraulic rack variant and fluid appears inside the boot, that’s a red flag for internal seal failure. Either way, plan prompt replacement and book an alignment to protect tyre wear and steering feel.