Parts for your 2012 Subaru Impreza-Rack boots

2012 Subaru Impreza rack-boots: what they do and when to replace them

Based on the 2012MY Subaru Impreza Factory Service Manual (Steering section), Subaru’s electronic parts catalogue for GP/GJ chassis, and common aftermarket catalogues, this model uses a rack-and-pinion steering gear with bellows-style rack-boots (also called steering rack boots or bellows). So yes—rack-boots are fitted and relevant on the 2012 Subaru Impreza, including electric power steering variants and hydraulic-assisted performance derivatives.

On a 2012 Impreza, rack-boots seal and protect the moving ends of the steering rack and the inner tie rods. They keep dust, water and road grit out while allowing the rack to move freely, and they help retain the light grease on the inner joint. Whether the vehicle runs electric assist (most GP/GJ Imprezas) or hydraulic assist (some performance variants), the boots themselves do the same critical job—shielding the rack from contamination that can chew out seals and bearings and cause steering play or noise.

If a boot splits, grit and water can get in and rapidly wear the rack bar and inner joints. It’s also a common WoF/roadworthy fail in NZ and Australia. Beach driving, unsealed roads, and hot UV conditions can accelerate cracking, so regular checks matter.

As part of routine servicing (every 10–15,000 km or at each oil service), it’s smart to:

• Visually inspect both rack-boots for cracks, perishing, loose or missing clamps, or grease spray.
• Gently flex the bellows to spot fine splits that hide in the folds.
• Wipe away dirt with mild soapy water, avoid petroleum-based dressings that can harden rubber.

When replacement’s needed, go for quality one-piece boots (OE or equivalent) and new clamps. Universal split boots are best kept as an emergency fix only. Replace in pairs, check inner tie rods for play while you’re in there, and make sure the boot isn’t twisted when clamped. Count the turns off the outer tie rod end or measure the exposed threads to keep toe close, but book a wheel alignment afterwards—disturbing tie rods nearly always shifts toe and can scrub tyres. If you find power steering fluid inside a boot on a hydraulic rack, that points to an internal seal leak, fitting a new boot alone won’t solve it and the rack may need repair. A competent tech will typically allow around 1–2 hours for both sides, plus alignment.

Look after the boots and the steering gear will usually repay the favour with tight, quiet steering for years.

Popular questions about 2012 Subaru Impreza rack-boots

How do I know my rack-boots need replacing?
Common signs include visible cracks or splits in the bellows, grease flung onto nearby suspension, and dirt or moisture trapped inside the folds. On hydraulic racks, fluid weeping from a boot can indicate an internal rack seal issue rather than just a boot problem. During servicing, a mechanic will flex the bellows and check for hidden splits and inner tie rod play.

Do I need a wheel alignment after changing rack-boots?
Yes, it’s highly recommended. Even if you mark and count turns on the tie rod ends, toe can still shift slightly during reassembly. A proper alignment prevents uneven tyre wear and restores straight-line tracking and steering feel.

Are split/universal rack-boots OK to use?
They can work as a short-term or roadside solution, but a one-piece boot that slides over the inner tie rod is the preferred, longer-lasting fix. One-piece boots seal better, handle steering movement reliably, and are less likely to loosen or tear in harsh Aussie and Kiwi conditions.