Parts for your 2021 Mitsubishi Eclipse cross-Control arms

2021 Mitsubishi Eclipse Cross control arms – what they do and how to look after them

Yes, control arms are absolutely used on the 2021 Mitsubishi Eclipse Cross. The front suspension is a MacPherson strut with a lower control arm carrying the ball joint, and the rear is a multi-link layout that uses several control arms (lateral links and a trailing arm) to locate the wheel. This layout is detailed in Mitsubishi’s factory service manual for Eclipse Cross (front and rear suspension sections) and confirmed by common workshop data sources such as Autodata/InfoTech and OEM parts catalogues covering MY21.

On this model, control arms set and hold the wheel’s position as the suspension moves, keeping alignment steady for confident steering, braking and ride comfort. The rubber bushes isolate vibration, while the front lower ball joint lets the wheel steer smoothly. Over time, bushes can crack or soften, and ball joints can develop play, which shows up as vague steering or knocks over bumps.

• Typical symptoms to watch: clunks on take‑off or over speed humps, steering pull or wander, uneven tyre wear, vibration under braking, or a “loose” feel through the wheel.

During regular servicing (think every 10,000–15,000 km or at each WoF/RWC check), a tech should inspect the front lower arms and rear links for torn bushes, split dust boots, corrosion and any free play. If wear is found, replacing the affected arm or bush restores alignment stability and saves tyres.

Front lower arms on the Eclipse Cross are commonly replaced as a complete assembly when the ball joint or bushes are worn. Rear multi‑link components can often be done individually. After any arm or bush replacement, a full four‑wheel alignment is a must. Ask the workshop to final‑torque the arm bolts at normal ride height so the bushes aren’t pre‑twisted, which helps them last longer.

For daily drivers around NZ and Australia, quality OEM‑equivalent arms and bushes are worth it, especially if the vehicle sees rougher roads. If there’s a persistent knock, don’t ignore it—sorting a tired control arm early prevents extra wear on tyres and other suspension parts, and keeps the Eclipse Cross feeling tight and safe.

Technical sources referenced: Mitsubishi Eclipse Cross (GK) Factory Service Manual, Front and Rear Suspension sections (MY2018–2021 coverage), Mitsubishi Global/ASA Parts Catalogue for MY21 Eclipse Cross suspension components, Autodata/InfoTech workshop specifications for Eclipse Cross GK front MacPherson strut and rear multi‑link assemblies.

• Does the 2021 Eclipse Cross actually have control arms front and rear?
  Yes. The front uses a MacPherson strut with a lower control arm and integral ball joint, the rear is a multi‑link arrangement with multiple control arms (lateral links) and a trailing arm. That’s how wheel location and alignment are controlled on this model.
• How often should the control arm bushes be checked or replaced?
  Have them inspected at each service or at WoF/RWC time. Many last well past 80,000–120,000 km, but harsh roads, kerb strikes or fluid contamination can shorten life. Replace when there’s cracking, excess movement or noise, and always get a wheel alignment afterwards.
• Can just the bushes be replaced, or is a full arm needed?
  For the rear links, individual bushes or arms can be replaced as needed. For the front lower arm, workshops often fit the complete arm because it includes the bushes and ball joint, making the job quicker and more reliable. Your tech can advise based on wear and parts availability.