Parts for your 2012 Subaru Impreza-Control arms

2012 Subaru Impreza control-arms: purpose, servicing and replacement

Control-arms are absolutely used on the 2012 Subaru Impreza. Technical references including the Subaru Impreza (GJ/GP) 2012 Service Manual (Front Suspension section), the Subaru Genuine Parts Catalogue, and common aftermarket fitment catalogues all list front lower control arms for this model. The rear suspension uses multiple links (lateral links and a trailing arm) that function as control arms for wheel location. So, control-arms are relevant to this vehicle’s suspension and routine servicing.

On the 2012 Impreza, the front lower control-arm locates the wheel hub and manages geometry as the suspension moves, keeping tyres planted and steering consistent. It’s hinged to the subframe with rubber bushes to control noise, vibration and harshness, and it connects to the steering knuckle via a ball joint. Together, they set camber and caster under load and help the car track straight over bumps and through corners.

Australian and New Zealand roads, with potholes, corrugations, and the odd kerb strike, can accelerate wear on bushes and ball joints. Age and fluid contamination also harden or crack bushes. While there’s no fixed replacement interval, many Imprezas see bush or arm replacement somewhere between 100,000 and 200,000 km depending on use.

• Common symptoms of tired control-arms or bushes:
  • Clunks over bumps, steering shimmy, or a wandering feel on the motorway
  • Uneven or rapid tyre wear at the front
  • Vibration under braking or vague turn-in
  • Visible torn or split bushes, or a leaking hydro-bush
• Service tips for a 2012 Impreza:
  • Inspect control-arm bushes and ball joints at each service or at least every 20,000 km
  • Check for play with the wheel lifted, any movement at the ball joint is a fail
  • If replacing, torque all arm-to-subframe bolts at normal ride height to prevent bush wind-up
  • Replace arms or bushes in pairs and fit new self-locking nuts where specified
  • Book a wheel alignment immediately after any arm, bush, or ball joint work

Owners can replace just the bushes or the complete arm. Pressing bushes needs the right tools, a complete arm often saves labour and ensures new bushes pre-fitted. The front ball joint is separate on this model, it’s wise to assess and replace it if there’s any play or boot damage. A quality alignment post-repair restores steering feel and protects new tyres.

With healthy control-arms and bushes, a 2012 Subaru Impreza feels tight, steers faithfully, and keeps tyres wearing evenly—worth the attention at service time.

Popular questions about 2012 Subaru Impreza control-arms

Does a 2012 Subaru Impreza actually have control-arms?
Yes. Technical documentation (Subaru 2012 GJ/GP Service Manual and Subaru parts catalogue) lists front lower control-arms, plus rear links that act as control arms. They’re core to the MacPherson strut front suspension layout.

Do I need a wheel alignment after replacing control-arms or bushes?
Definitely. Any change to arms, bushes, or ball joints can alter toe and camber. A proper four-wheel alignment restores straight-line stability, steering feel, and protects tyre life.

Can I replace just the bushes, or should I fit complete control-arms?
Both approaches are valid. New bushes are cost-effective but require a press and careful setup. Complete arms come with new bushes pre-installed and can save time. If the ball joint shows wear, replace it while you’re there.