Parts for your 2021 Subaru Outback-Rack boots

2021 Subaru Outback rack-boots (steering rack bellows)

Yes, rack-boots are fitted to the 2021 Subaru Outback. This is confirmed by Subaru’s factory Service Manual for the 2020–2022 Outback/Legacy platform (steering section), the Subaru FAST/EPC parts catalogue (showing left and right steering gear bellows/boot kits and clamps), and multiple aftermarket parts catalogues that list rack-and-pinion bellows kits for the BT-series Outback. So rack-boots are absolutely relevant on this model.

On the 2021 Outback’s electric power steering (EPS) rack, the rack-boots (also called bellows) sit at each end of the steering gear, protecting the inner tie rods and the rack from dust, water, mud and road grit. They expand and contract as the rack moves, keeping the grease in and the nasties out. There’s no power-steering fluid in the boots on this EPS system, if a boot looks oily, it’s usually contamination from elsewhere (for example engine oil mist or a split CV boot).

As part of regular servicing (every 12 months/12,500 km in AU/NZ schedules), it’s smart to have the rack-boots visually checked under the car. A good technician will look for surface cracking, splits at the concertinas, loose or missing clamps, boots twisted after a previous repair, and grit or water tracking past the boot lips. Catching damage early prevents accelerated inner tie-rod wear and costly steering rack issues.

• Typical signs they need attention: visible tears, perished rubber, grease fling on the subframe, dirt inside the boot, a light knock over bumps, or a WOF/RWC advisory.
• Replacement tips: always fit quality OE-equivalent boots, renew both clamps, ensure the boot isn’t twisted and can breathe as the rack travels, and seat the lips cleanly on the rack and tie-rod shoulders.
• Alignment: because the outer tie rod is usually removed to slip the boot on, a wheel alignment is recommended straight after.

While boots can last many years, harsh UV, gravel roads and off-road splash can age them faster. If one side has failed, the other side often isn’t far behind—doing them as a pair saves hassle. Costs are modest: the boots and clamps are inexpensive, with labour typically under an hour each side, plus an alignment. Done properly, fresh rack-boots help the Outback’s steering stay quiet, precise and protected over many more kilometres.

Does the 2021 Outback actually have rack-boots?

It does. Subaru’s service literature and the dealer EPC list bellows boots and clamps on both ends of the EPS rack for this model. Aftermarket catalogues also carry direct-fit boot kits for 2020–2022 Outback.

How can someone tell a rack-boot needs replacing?

Look for splits or perishing in the folds, loose or missing clamps, dirt or water inside the boot, or grease flung onto nearby components. Any of these is a cue to replace the boot before grit chews out the inner tie rod.

Is a wheel alignment needed after changing rack-boots?

Usually, yes. The outer tie rod is commonly removed to slide the new boot on, which can alter toe. A post-repair alignment keeps tyre wear and steering feel spot on.