Parts for your 2015 Mazda Cx-5-Rack boots

2015 Mazda CX-5 rack boots: what they do and when to replace them

Technical sources confirm the 2015 Mazda CX-5 (KE series) is fitted with rack boots. Mazda’s Workshop Manual for the steering system, the Mazda Electronic Parts Catalogue (Group 32 Steering, commonly listed as “Boot, Steering Gear” e.g., KD35-32-281), and mainstream aftermarket fitment catalogues for 2013–2016 CX-5 racks all show bellows-type rack boots on both sides of the rack-and-pinion electric power steering assembly.

On this CX-5, the rack boots are the flexible rubber bellows on each end of the steering rack. Their job is simple but critical: keep grit, water, and road grime out of the inner tie rods and rack seals, while allowing the steering to move freely. They also help retain the correct lubrication around the inner tie rod joints. When the boots split or harden, dirt gets in, grease gets out, and the inner tie rods and rack can wear fast—turning a cheap fix into a pricey steering rack replacement.

As part of regular servicing, they’re worth a quick look any time the front end is up. A good rule of thumb in Australia and New Zealand is to inspect at each service interval (about every 10,000–15,000 km). Signs they’re due include visible cracks, perishing, oily sling, a split that opens when the steering’s at full lock, or dampness and grit inside the bellows. Steering clunks or a notchy feel can follow if dirt has already made its way in.

Replacement is straightforward for a trained tech and fine for capable DIYers with stands, a tie-rod tool, and a torque wrench. Expect to remove the outer tie rod end, slide off the old boot and clamps, and refit a quality EPDM boot with the correct crimp or ear clamps—skip cable ties, as they can’t hold pressure or seal properly. If equipped, ensure any breather or balance tube between boots is clean and reconnected so both sides can equalise air volume. Marking the tie rod helps, but a wheel alignment is still recommended once everything’s back together.

Going genuine Mazda or a quality aftermarket brand keeps the fit right and the rubber durable in local heat and UV. Catching a tired boot early protects the inner tie rods and the electric rack, saves cash, and keeps the CX-5 tracking straight without drama.

• Checklist: look for splits, perishing, grease loss, or contamination inside the bellows.
• Best practice: replace boots in pairs, use proper clamps, and book an alignment.

Popular questions

Do 2015 Mazda CX-5s definitely have rack boots, and what are the part references?
Yes. The Mazda Electronic Parts Catalogue lists bellows boots for the CX-5 KE steering gear (often shown as “Boot, Steering Gear,” e.g., KD35-32-281). Clamp and small parts kits are catalogued alongside. Always confirm by VIN to pick the correct supersession.

How often should rack boots be replaced on a 2015 CX-5?
There’s no fixed age, but they should be inspected at every service. In local conditions, original boots can last 5–10 years, heat, UV, gravel roads, and oil contamination can shorten that. Replace at the first sign of cracking or a split—waiting risks inner tie rod and rack damage.

Can they be changed at home, and is an alignment needed?
A confident DIYer can do it with axle stands, a separator, and the right clamps. Marking the tie rod helps preserve toe, but a professional wheel alignment after refit is recommended to keep steering feel and tyre wear spot on.