Parts for your 2011 Subaru Legacy-Strut mounts

2011 Subaru Legacy strut mounts — what they do and when to sort them

Based on the Subaru Factory Service Manual for the 2011 Legacy (Front Suspension: MacPherson Strut) and the Subaru parts catalogue, this model uses strut mounts (also called strut top mounts/insulators with bearing) on the front suspension. The rear of the 2011 Legacy is a double-wishbone setup with separate shock absorbers, so there’s no rear “strut mount” in the strict sense — just upper shock mounts. Aftermarket catalogues from major suspension brands also list front strut mounts for the 2010–2014 Legacy/Outback range, confirming fitment.

Up front, the strut mounts play two key roles: they isolate vibration and road harshness from the body, and they provide a bearing surface so the struts can pivot smoothly when steering. Think of them as the cushion and swivel at the very top of each front strut assembly. A healthy mount keeps steering light and consistent, cuts down on clunks and creaks, and helps tyres wear evenly.

As they age, the rubber insulator can crack or compress, and the bearing can dry out or seize. That can lead to a dull thud over bumps, creaking when turning the wheel, notchy steering, tramlining, or a bonnet-height difference side to side. If the mount’s badly collapsed, it can chew through tyres and stress other front-end bits.

Best practice on a 2011 Legacy is to inspect the front strut mounts whenever the struts are out, and at least every 40,000–60,000 kilometres during routine suspension checks. Many owners replace the mounts along with new struts around the 100,000–150,000 kilometre mark, or sooner if symptoms show up. Always do them in pairs left/right, use new hardware where specified, and have a wheel alignment straight after. If tackling the job at home, proper spring compressors and correct torque on the top nut are non‑negotiable. A good workshop will also check the bearings for smooth rotation off the car and verify the mount orientation on reassembly.

Because the rear uses shocks rather than struts, rear “top mounts” are a different part and failure pattern. They can still perish and knock, but they don’t contain a steering bearing.

• Watch for: clunks over speed humps, creaks on steering, vague or heavy steering feel, irregular tyre wear, visible rubber cracking.
• After replacement: expect quieter operation, cleaner steering return-to-centre, and more consistent tyre wear.

Popular questions about 2011 Subaru Legacy strut mounts

Do the 2011 Legacy have strut mounts front and rear?
The 2011 Legacy has strut mounts at the front only. The rear suspension is double-wishbone with separate shocks, which use shock top mounts, not strut mounts.

How long do front strut mounts last on these?
It varies with roads and load, but many last 100,000–150,000 km. Inspect them during every major service or whenever the front struts are out. Replace if there’s noise, play, binding, or visible rubber deterioration.

Is it safe to keep driving with a noisy strut mount?
Short-term driving may be possible, but it’s not ideal. A failing mount can worsen steering feel, increase stopping distances on rough roads, and accelerate tyre wear. Get it inspected and sorted sooner rather than later.