Parts for your 2023 Subaru Outback-Control arms

2023 Subaru Outback Control Arms: What They Do and How to Look After Them

Control arms are absolutely relevant on the 2023 Subaru Outback. Subaru’s factory service manual and parts catalogue for the MY23 Outback list a front MacPherson-strut layout with a lower control arm, and a rear double-wishbone system using multiple control arms (lateral links and trailing arms). The Owner’s Manual suspension specs back this up. So yes—this model runs control arms front and rear.

On the Outback, control arms link the wheel hubs to the body, keeping the suspension geometry in check as the wheels move up and down. They set and hold key alignment angles like camber and caster, which keeps steering feel consistent and tyre wear even. Bushings in the arms soak up vibration and harshness, while the ball joint allows the hub to pivot for steering without binding. The result is that planted, predictable Subaru handling on bitumen and corrugated back roads alike.

As part of regular servicing in Australia and New Zealand conditions, it’s smart to have the control arms inspected at each service or about every 10,000–15,000 km, and sooner if the vehicle sees rough tracks, towing, or frequent long-distance touring. Technicians look for cracked or leaking (hydraulic) bushings, torn ball joint boots, corrosion, and play in the joints.

Tell-tale signs the Outback’s control-arm components need attention include:

• Clunks or knocks over speed bumps and potholes
• Steering wander or shimmy, especially under braking
• Uneven or rapid tyre wear, pulling, or a crooked steering wheel

When replacement’s due, many owners opt for complete arms with pre-pressed bushings to save labour. Quality aftermarket or genuine arms both work—just stick with reputable brands. It’s best practice to replace left and right together for balanced handling. The front lower arm interfaces with the ball joint, so if there’s any play or the boot’s torn, have the joint replaced at the same time.

After any control-arm work, a four-wheel alignment is essential to protect tyres and restore steering feel. Fasteners should be torqued with the vehicle at ride height to avoid preloading the bushings—this detail matters for longevity and comfort. If the Outback has copped a kerb strike or a hard hit off-road, get the arms and subframe checked immediately, even minor bends can sneakily chew out tyres and dull the drive.

Popular questions

How can someone tell the control-arm bushings on a 2023 Outback are worn?
They’ll often notice clunks over bumps, a vague or floaty front end, or saw-tooth/inner-edge tyre wear. A quick visual check may show cracked rubber or seepage from a hydraulic bushing. A technician can lever-test the arm and measure movement against spec.

Is a wheel alignment required after replacing control arms?
Yes. Changing arms or bushings alters caster and camber, and can nudge toe out of spec. A proper four-wheel alignment straight after the job protects tyres and restores the Outback’s steering feel.

How often should control-arm components be inspected in Aussie and Kiwi conditions?
Have them looked at every service (about 10,000–15,000 km), and before or after big trips. If the Outback regularly sees gravel, beach launches, or towing, shorten the interval and add a mid-cycle check for bush and ball joint wear.