Parts for your 2021 Subaru Impreza-Rack boots

2021 Subaru Impreza rack boots – what they do and when to replace them

Technical sources confirm the 2021 Subaru Impreza does use rack boots. The Subaru Technical Information System (workshop manual, Steering/Rack-and-Pinion section) illustrates bellows-style boots on each end of the electric power steering rack, and the Subaru Genuine Parts Catalogue lists a “steering gear boot” for MY2017–2021 Impreza (GK/GU platform). These are the flexible bellows that seal the inner tie rods and the rack ends from grit and water.

On the 2021 Impreza, the rack boots shield the inner tie-rod joints and rack seals, keeping grease in and the Aussie and Kiwi elements out—dust, road splash, even the odd beach run or corrugated back road. Because the car uses an electric power-assisted rack, there’s no power-steering fluid reservoir to worry about on top, but the rack mechanism still relies on those boots to prevent premature wear and contamination.

As part of routine servicing, a quick visual check of the boots is smart practice. Look for perishing, splits, or loose clamps. If a boot is torn, grit can chew out the inner tie-rod socket and allow moisture to track onto the rack shaft. Left too long, that can cause notchy steering, clunks over bumps, and even corrosion of the rack. Many workshops fold this check into 10,000–15,000 km or annual services, and WOF/roadworthy inspections often call out damaged steering dust boots.

Replacement is straightforward in trained hands. Best practice includes:

• Use OE-style bellows and stainless crimp bands rather than generic cable ties.
• Keep the boot untwisted and seated in its grooves, with equalised air volume so it doesn’t balloon or collapse on full lock.
• Inspect inner and outer tie rods for play while access is open, replace as a set if wear’s present.
• If any tie-rod length is disturbed, carry out a wheel alignment to protect tyres and restore steering feel.

Owners who frequent gravel, mud, or water crossings should ask for extra attention on the rack boots—abrasive dust and grit are the main enemy. A light film of grease on clamp lands during fitting helps seal without the boot creeping. If there’s oil weeping inside a torn boot, that’s a red flag for internal rack seal damage, the vehicle should be assessed promptly.

Bottom line: the Impreza’s rack boots are small, inexpensive parts that do a big job—keeping the steering precise and drama-free for the long haul.

FAQs

Does the 2021 Subaru Impreza actually have rack boots?
Yes. Workshop manual diagrams and the Subaru Genuine Parts Catalogue specify bellows-style steering gear boots on both ends of the electric rack. Even with EPS, the rack-and-pinion and inner tie rods still need dust boots to keep contaminants out.

How often should the rack boots be checked or replaced?
Have them inspected at each regular service (around 10,000–15,000 km or annually). Replace immediately if cracked, torn, swollen, or if clamps are loose. Vehicles driven on gravel, farms, or through water should get extra checks between services.

Will a wheel alignment be needed after changing rack boots?
If the outer tie rod is removed or the inner tie rod length is disturbed, an alignment is recommended. If the boot and clamps are swapped without altering tie-rod length, alignment may not shift—but most workshops still verify toe to protect tyres and ensure straight-ahead steering.