A Forester Owner's Guide to Suspension Strut Mounts for 2004-2009 Models
Clunking noises over bumps or stiff steering in your Forester could mean it's time for new strut mounts.
- For OEM quality and ride, choose KYB brand mounts, as they are the original manufacturer for Subaru.
- Always replace strut mounts when replacing struts to save on labor and ensure a complete repair.
- A wheel alignment is mandatory after replacing strut mounts to prevent poor handling and tire damage.
- Inspect your front lower control arms for severe rust, as they are subject to a critical safety recall for this Forester generation.
Is Your Forester Making Noise? Recognizing a Bad Strut Mount
A failing strut mount on a 2004-2009 Forester will give you clear warning signs. Because this part is made of rubber and metal, the rubber can dry out, crack, and fall apart over time, leading to metal-on-metal contact.
- Clunking or Popping Noises: This is the most common symptom. You may hear a clunk, pop, or squeak when driving over bumps or making sharp turns at low speeds. 🎬 Watch: Hear what a failing strut mount sounds like. This is the sound of the worn-out mount allowing the strut to move and hit the chassis.
- Stiff or Binding Steering: The front strut mounts contain a bearing that lets the strut pivot as you steer. When this bearing wears out, your steering can feel stiff, jerky, or like it's binding. You might also notice the steering wheel doesn't return to center easily after a turn.
- Excessive Vibration: Worn rubber can no longer absorb road vibrations, so you'll feel more harshness through the steering wheel and floor.
- Uneven Tire Wear: A bad strut mount can throw off your Forester's wheel alignment. This can cause your tires to wear out unevenly and prematurely.
Important Suspension Recall for 2003-2008 Foresters
There is a major safety recall (NHTSA Campaign ID: 11V464000) for front lower control arms on Foresters in salt-belt states. These can rust and break, causing a loss of vehicle control. While you're inspecting your strut mounts, it is critical to also check the condition of your front lower control arms.
Choosing the Right Aftermarket Strut Mount
You don't need to buy parts from the dealer to get your Forester riding like new. However, not all aftermarket brands are created equal. For a critical suspension part like this, quality matters.
Tier 1: OEM Quality
KYB: KYB is widely known to be the original equipment manufacturer (OEM) for Subaru's suspension parts. Choosing a KYB strut mount is the closest you can get to the original part your Forester was built with. Forum users and mechanics agree that KYB provides the best fit and restores the factory ride and handling. While some have noted isolated issues with aftermarket KYB mounts getting noisy, they remain the top recommendation.
Tier 2: Standard Aftermarket
Monroe: Monroe is a well-known suspension brand, but their parts are generally considered a step below KYB in quality for Subarus. Owners report that Monroe mounts and struts provide a softer ride, but they may not last as long. If your priority is a low initial cost, Monroe is a viable option, but expect a potential compromise in longevity and handling precision compared to KYB.
Beck Arnley: This brand often sources parts from various manufacturers, sometimes even re-boxing OEM parts. However, the quality can be inconsistent. For a part that requires significant labor to replace, it may be safer to stick with a more predictable brand like KYB.
Tier 3: Economy Brands
DEA and Westar: These brands fall into the economy category. While they offer the lowest price, their durability and the quality of the rubber and bearings may not match higher-tier brands. They can be a solution for a tight budget, but you may find yourself replacing them again sooner.
Pro Tip: Replace in Pairs
Always replace strut mounts in pairs (both front or both rear). If one has failed, the other is likely not far behind. It's also highly recommended to replace the struts at the same time you replace the mounts. The labor is nearly identical, and installing a new mount on an old, worn strut is a recipe for poor performance.
🎬 See this step-by-step guide for replacing Forester struts and mounts.Frequently Asked Questions
Do I need an alignment after replacing strut mounts?
Yes, absolutely. Replacing the strut mounts will affect your vehicle's alignment angles. You must get a professional wheel alignment immediately after the repair to ensure proper handling and prevent rapid tire wear.
Can I reuse my old springs?
Yes, in most cases you can reuse your factory springs if they are not broken, sagging, or heavily rusted. The job requires a special tool called a spring compressor to safely move the spring to the new strut and mount assembly. This tool can be dangerous if used improperly, so follow all safety instructions.
🎬 Watch: How to install front struts using basic hand tools.Is an OEM Subaru strut mount better than aftermarket?
Since KYB is the OEM manufacturer for Subaru, a KYB aftermarket mount is considered equivalent in quality to the dealer part, often at a lower price. Cheaper aftermarket brands will likely not have the same durability or ride quality as OEM or KYB.
Should I replace the struts and mounts at the same time?
Yes. The labor involved to replace a strut mount is the same as replacing the entire strut assembly. Putting a new mount on an old strut, or an old mount on a new strut, is a waste of time and money. For a lasting repair, replace both components together.
Helpful Videos
Technical Specifications
OEM Part Numbers: 20320FE131 20370AE00A
The front strut mount for the 2004-2009 Forester includes an integrated bearing to allow for steering pivot. The rear mount is a solid rubber and metal design. Both are designed to insulate the chassis from the strut assembly.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Subaru Forester:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Forester Making Noise? Recognizing a Bad Strut Mount
- Important Suspension Recall for 2003-2008 Foresters
- Choosing the Right Aftermarket Strut Mount
- Tier 1: OEM Quality
- Tier 2: Standard Aftermarket
- Tier 3: Economy Brands
- Pro Tip: Replace in Pairs
- Frequently Asked Questions
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