Parts for your 2018 Mitsubishi Eclipse cross-Ball joints

2018 Mitsubishi Eclipse Cross ball joints: what they do, and when to sort them out

Based on technical references including the Mitsubishi Eclipse Cross Service Manual (2018, Group 33A Front Suspension), Mitsubishi New Model/Service Information, and dealer EPC/ASA parts listings, the 2018 Eclipse Cross runs a MacPherson strut front end with a lower control arm and a ball joint connecting the arm to the steering knuckle. Aftermarket catalogues (e.g., MOOG, Sankei 555, and local parts listings from Repco and Supercheap Auto) also list front lower ball joints or complete lower control arms with integrated joints for this model. That makes ball joints absolutely relevant on this vehicle. The rear is a multi-link arrangement, primarily bushed, depending on market spec there may be spherical/ball-joint style joints at the knuckle, but the common service item owners encounter is the front lower ball joint (often supplied as part of the lower control arm).

On the 2018 Mitsubishi Eclipse Cross, the front lower ball joints let the front wheels steer and move up and down at the same time, all while keeping the hub securely located. They’re the pivot point between the steering knuckle and the lower control arm, carrying a decent share of the vehicle’s weight and cop plenty of abuse from Aussie and Kiwi roads. When the joint wears, it can introduce clunks, looseness, and uneven tyre wear, and it’ll make the steering feel a bit vague.

Most workshops treat ball joints as inspect-and-replace items rather than something to “service”. During routine servicing or a WOF/rego check, they’ll look for play at the wheel, torn dust boots, or grease weep. If there’s free play or a split boot, replacement is the go. On many Eclipse Cross variants the joint is integrated into the lower control arm, some aftermarket suppliers offer a standalone joint, but plenty of techs prefer swapping the whole arm so new bushes and a fresh joint go in together.

Tell-tale signs it’s time:

• Clunking or knocking over bumps, especially at low speeds
• Uneven or rapid inner/outer tyre wear
• Steering wander, tramlining, or a notchy feel when turning
• Failed WOF/roadworthy for ball joint play

Best practice after replacement is a wheel alignment. Expect around 1–2 hours per side depending on rusted bolts and whether the full arm’s being changed. Fresh self-locking nuts/cotter pins, correct torque, and seating the taper properly are must-dos. For longevity, keep an eye on the dust boots at every service (say, every 10,000–15,000 km), rotate tyres on schedule, and fix worn suspension bushes promptly so the new joint isn’t flogged out early.

Owners can plan on long service life if the boots stay intact, but once play is detected, replacement shouldn’t be delayed—it’s a key safety item that affects braking stability and tyre life.

Popular questions

Are the front ball joints separate or part of the control arm on a 2018 Eclipse Cross?
Many are supplied as part of the front lower control arm from the factory, but aftermarket options may offer a separate press-in joint. Workshops often prefer replacing the complete arm to renew bushes at the same time and avoid press-fit risks. VIN-specific parts lookup will confirm what’s fitted to a particular vehicle.

What symptoms point to worn ball joints on an Eclipse Cross?
Common giveaways are clunks over bumps, steering looseness, or uneven tyre wear. A torn dust boot or visible grease leak is also a red flag. If a WOF/roadworthy detects free play at the joint, it’s time to replace it without delay.

Do you need a wheel alignment after ball joint or control arm replacement?
Yes—an alignment is recommended. Any change at the lower arm/ball joint can shift camber and toe, so aligning it afterwards protects tyre life and keeps the steering feel tidy.