Parts for your 2009 Subaru Forester-Struts

2009 Subaru Forester struts: what they do and when to replace them

Technical sources confirm the 2009 Subaru Forester (SH series) runs MacPherson struts on the front axle and a separate double-wishbone arrangement with shocks and springs at the rear. This layout is documented in the Subaru SH service manual and echoed by major fitment catalogues from KYB and Monroe, as well as workshop guides covering the 2009 Forester. So, struts are absolutely relevant on the front of the 2009 Forester, while the rear uses shocks, not struts.

On the front of a 2009 Subaru Forester, the strut is a structural part of the suspension. It combines a shock absorber with a coil spring and ties directly into the steering knuckle and body. That means it doesn’t just smooth bumps, it also helps keep wheel alignment steady, supports the vehicle’s weight through the spring, and keeps the tyre in proper contact with the road. When the fronts are tired, the Forester can feel floaty over corrugations, dive under braking, or wander in crosswinds, and you’ll often see uneven or cupped tyre wear.

For servicing, most techs recommend inspecting front struts every service and considering replacement somewhere around 80,000–120,000 km, earlier if the Forester tows, sees rough gravel, or carries heavier loads. Always replace struts in axle pairs and plan on fitting new top mounts/bearings, bump stops, and dust boots at the same time. Quality matters here—OE-equivalent units from reputable brands maintain the Forester’s ride height and rebound control as intended.

Key signs it’s time for fresh fronts include:

• Oil seepage down the strut body
• Clunks over sharp bumps or slow-speed steering
• Nose-dive, float, or a “porpoising” feel on undulating roads
• Cupped or scalloped front tyres and longer stopping distances

After fitting front struts, a full wheel alignment is a must. On the SH Forester, small camber changes can occur when the strut-to-knuckle bolts are disturbed, so getting the geometry right protects tyres and restores that planted Subaru feel. Torque fasteners with the vehicle at ride height to avoid bushing preload, and recheck the top mount nuts after a short shakedown. If the ride still feels off, remember the rear uses shocks—checking and replacing those in pairs can bring the whole package back into balance.

Popular questions about 2009 Subaru Forester struts

Does a 2009 Subaru Forester have rear struts?
No—the 2009 Forester uses rear shock absorbers with a double-wishbone suspension, not rear struts. The front axle is where you’ll find MacPherson struts. If the rear feels bouncy or unsettled, you’re looking at rear shocks and related bushings rather than struts.

How often should front struts be replaced?
There’s no strict kilometre rule, but many Foresters benefit from new front struts between 80,000 and 120,000 km depending on road conditions and load. Inspect them at each service for leaks, play in the top mounts, and damping performance, and replace in pairs when wear shows.

Do you need a wheel alignment after replacing front struts?
Yes. Disturbing the strut-to-knuckle bolts can alter camber and toe. A proper post-fitment alignment protects tyres, sharpens steering feel, and ensures the Forester tracks straight.