Parts for your 2008 Subaru Forester-Strut mounts

2008 Subaru Forester strut mounts — what they do and when to replace them

Strut mounts are absolutely relevant on the 2008 Subaru Forester. Technical documentation such as Subaru’s factory service manuals and OEM parts catalogues (FAST) confirm the Forester uses MacPherson struts with upper mounts/bearings at the front. Aftermarket catalogues from KYB and Monroe also list front strut mount assemblies for this model. Rear fitment depends on build/generation: late SG (up to 2008 in many markets) uses rear struts with top mounts, while the SH platform (introduced as 2008–2009 depending on region) moved to a double-wishbone rear with a separate shock and top mount. Either way, there are front strut mounts, and a rubber-isolated top mount at the rear.

On this Forester, the front strut mount sits at the top of the strut and does two big jobs: it isolates noise, vibration and harshness so the cabin stays quiet, and it carries a bearing that lets the strut rotate smoothly as the wheels steer. The rubber in the mount cushions impacts from rough Kiwi back roads and Aussie corrugations, while the bearing keeps steering feel light and consistent. Where fitted at the rear (SG), the top mount supports the strut and spring assembly and filters out road shock, on SH, the rear top mount serves the shock absorber rather than a strut, but the service considerations are similar.

With age and kilometres, the rubber can crack or collapse and the bearing can bind. Telltales include clunks over bumps, a knock on full lock, notchy or self-centring steering, vibration, and uneven tyre wear. Because the mounts cop the same punishment as the struts, best practice is to inspect them at each service and replace them whenever struts/shocks are renewed, or around the 100,000–150,000 km mark if symptoms appear earlier. Many workshops treat the mount, bearing (front), and dust boots as a kit to keep everything tight and quiet.

When replacing, fit quality OE-equivalent parts, do both fronts together, and torque all hardware to the Subaru spec. Correct orientation of the mount is critical, and a wheel alignment is a must afterwards. Use a proper spring compressor and mark camber bolt positions before disassembly. In NZ, these issues can affect WOF, so sorting tired mounts is a smart safety and comfort win.

Popular questions about 2008 Subaru Forester strut mounts

Do both the front and rear of a 2008 Forester have strut mounts?
Yes, the front definitely uses strut mounts with integrated bearings. Rear fitment depends on build: SG models have rear strut mounts, while SH models use a top mount for a separate rear shock (not a strut). In both cases there’s a rubber-isolated top mount that can wear and need replacement.

When should the strut mounts be replaced?
Replace them when fitting new struts/shocks, or sooner if you notice clunks, notchy steering, vibration, or uneven tyre wear. Many owners see service life somewhere around 100,000–150,000 km, but harsh roads can shorten that. Always check condition during routine servicing.

Do I need a wheel alignment after changing strut mounts?
Yes. Any work that disturbs the strut-to-knuckle interface can alter camber and caster. A proper alignment after refit protects tyre life and ensures the Forester tracks straight and feels right at the wheel.