Subaru Legacy Suspension Strut Mount Guide (2001-2010)
Stop the clunking and fix wandering steering by choosing the right strut mount for your Legacy.
- Listen for clunking noises over bumps and check for poor steering response, as these are the most common symptoms of failure.
- For best results and longevity, choose premium aftermarket brands like KYB, which is often the OEM supplier for Subaru.
- Always replace strut mounts in pairs and perform a wheel alignment immediately after replacement to prevent uneven tire wear.
- Consider replacing the entire strut assembly if your vehicle has high mileage to save on future labor costs.
Is Your Legacy Making a Clunking Noise?
One of the first and most common signs of a failing strut mount on a 2001-2010 Subaru Legacy is noise. You might hear a distinct clunking, knocking, or popping sound, especially when driving over bumps, potholes, or making sharp, low-speed turns. This happens because the rubber in the mount has worn out or cracked, allowing the metal parts of the suspension to make contact. You may also notice increased vibrations through the steering wheel or floor, a bouncy ride, or that the steering feels loose, pulls to one side, or doesn't return to center smoothly.
🎬 Watch this video to hear common bad strut mount sounds.Don't Ignore the Noise
While a noisy strut mount isn't an immediate breakdown risk, ignoring it is a bad idea. A failed mount can accelerate wear on the strut itself, your tires, and other suspension components, leading to more expensive repairs down the road. It also negatively affects your car's handling and stability.
🎬 Learn more about the signs of a faulty strut mount.Choosing the Right Aftermarket Strut Mount
When replacing strut mounts on your Legacy, you have several aftermarket options. The general consensus among Subaru owners is that not all aftermarket mounts are created equal. Here’s a breakdown of the available brands from economy to premium.
Brand Quality Tiers
- Premium Aftermarket (Recommended): KYB
KYB is a well-respected brand and is often the original equipment manufacturer (OEM) for Subaru suspension parts. Many Subaru owners and mechanics recommend using KYB mounts because they offer a quality and ride feel that is very close to the original factory part. If you are replacing your struts with KYB struts, using their mounts ensures a perfect fit. - Standard Aftermarket: Monroe, Beck Arnley
Monroe is another major suspension component manufacturer. Their strut mounts are designed to meet OE specifications and reduce noise and vibration. However, some users report Monroe rubber can be softer than OEM or KYB, potentially leading to a shorter lifespan. Beck Arnley parts are generally considered reliable, often sourcing their components from various quality manufacturers that may even include the original OEM supplier. - Economy Brands: DEA, Westar
DEA and Westar are typically positioned as budget-friendly options. While they offer a low-cost solution, the long-term durability, especially the quality of the rubber and bearings, can be inconsistent compared to premium brands. These may be suitable for a vehicle nearing the end of its life or if budget is the primary concern, but expect a potential compromise in ride quality and longevity.
Pro Tip: Replace in Pairs and Consider the Struts
It is highly recommended to replace strut mounts in pairs (both front or both rear) to maintain balanced handling. Also, if your Legacy has over 100,000 miles on its original struts, it's wise to replace the entire strut assembly (strut, mount, and spring) at the same time. This saves on labor costs in the long run and ensures all your new suspension components work together perfectly.
Cost to Replace Subaru Legacy Strut Mounts
The cost can vary depending on your location and whether you do the work yourself. Below are some general estimates for the 2001-2010 Subaru Legacy.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Strut Mount (Single) | $51.27 - $96.21 |
| New OEM Strut Mount (Single) | $90 - $150 |
| Shop Labor (Per Pair) | $250 - $500 |
Frequently Asked Questions
Do I need a wheel alignment after replacing strut mounts?
Yes, absolutely. Replacing the front strut mounts will affect your vehicle's suspension geometry. A four-wheel alignment is required to ensure proper handling, prevent the car from pulling to one side, and avoid premature tire wear.
Can I replace just one strut mount?
While you can, it's strongly recommended to replace them in pairs (both fronts or both rears). Suspension components wear at similar rates. Replacing only one can result in unbalanced handling and you'll likely be replacing the other side soon anyway.
Is this a difficult DIY job?
Replacing a strut mount requires disassembling the entire strut and spring assembly. This requires a special tool called a spring compressor. Using a spring compressor can be dangerous if not done correctly. Because of the safety risks, this job is often best left to experienced DIY mechanics or a professional shop.
🎬 See how to replace the front strut mounts yourself.Are there any recalls for 2001-2010 Legacy strut mounts?
No. Searches of the National Highway Traffic Safety Administration (NHTSA) database did not find any recalls specifically for suspension strut mounts on the 2001-2010 Subaru Legacy. A Technical Service Bulletin (TSB) exists for newer models regarding cosmetic rust on the strut mount cap, but it does not apply to this generation and is not a safety issue.
Helpful Videos
Technical Specifications
OEM Part Numbers: 20320AA112 20320AA111 20320AA110 20370AE001 20370AE000
Includes a bearing for front applications to serve as a steering pivot. The mount is constructed of a steel top plate and a rubber or polyurethane insulator to dampen vibrations. Attaches to the chassis via three top mounting studs.
We Have This Part in Stock
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.
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