Parts for your 2021 Mitsubishi Eclipse cross-Strut mounts

2021 Mitsubishi Eclipse Cross strut mounts — what they do and when to replace them

Based on technical references — including the Mitsubishi Motors Eclipse Cross GK/GL workshop manual (front suspension section), Mitsubishi service literature for Australia/NZ, and fitment catalogues from KYB and Monroe — the 2021 Mitsubishi Eclipse Cross runs a MacPherson strut front suspension with an upper strut mount and integrated thrust bearing. The rear is a multi-link layout with separate shocks, so there are no rear strut mounts. That means front strut mounts are absolutely relevant on this model.

Up front, the strut mounts sit at the top of the MacPherson strut assembly. They do two big jobs: they isolate road vibration and noise from the body, and they provide a pivot point (via a bearing) so the strut can turn smoothly with the steering. In plain terms, they help the Eclipse Cross steer cleanly while keeping harsh bumps out of the cabin.

Over time, the rubber insulator in the mount can harden or crack, and the bearing can get notchy. The tell-tales are pretty familiar: clunks over speed humps, a groan or twang as the wheel is turned, steering that doesn’t self-centre nicely, and uneven front tyre wear. If left too long, poor mounts can knock alignment out and make the steering feel vague.

There’s no fixed replacement interval, but many owners will see mounts last somewhere between 80,000 and 150,000 km, depending on roads and loads. A good rule is to have them inspected at each major service, and to replace them whenever the front struts are being changed. They’re a matched component, so doing both sides at the same time is best practice.

When fitting new mounts on a 2021 Eclipse Cross, it’s worth using quality components that include the thrust bearing. Because the coil spring needs to be compressed, this is definitely a pro job with the right tools. Once done, a wheel alignment is recommended, as the strut-to-knuckle bolts and top mount position can affect camber and caster.

Owners who regularly tackle corrugations or potholes should keep an ear out for new noises and have the front end checked more often. While the mounts themselves aren’t a serviceable item (the bearings are sealed), early replacement when symptoms start will keep the steering feel tidy and protect those front tyres.

• Typical symptoms: clunks, creaks, steering bind, poor self-centring, uneven tyre wear
• Best practice: replace in pairs, include the bearing, and align afterwards
• Inspection timing: at major services or with any front-end noise

Popular questions about 2021 Mitsubishi Eclipse Cross strut mounts

How long do the front strut mounts typically last?

There’s no exact schedule, but many will go 80,000–150,000 km in Aussie and Kiwi conditions. Rough roads, heavy loads, and lots of stop–start driving can shorten that. Have them checked during routine servicing and whenever you notice new noises or steering changes.

Do I need a wheel alignment after replacing strut mounts?

Yes. Replacing mounts usually involves loosening the strut-to-knuckle bolts and disturbing the top mount position, both of which can nudge camber and caster. A proper alignment afterwards will protect tyre wear and restore straight-line stability.

Can worn strut mounts cause steering noise or “memory steer”?

They can. As the thrust bearing binds or the rubber degrades, you might hear groans or twangs when turning, feel notchy steering, or notice the wheel doesn’t self-centre cleanly. Replacing the mount and bearing brings the smooth steering feel back.