A Guide to Suspension Strut Mount Kits for the 2006-2015 Lexus IS350
Hearing clunks or feeling vibrations from your front end? Your IS350's strut mounts may need replacement.
- Always replace strut mounts in pairs (both front) to ensure balanced and safe handling.
- A four-wheel alignment is mandatory after replacing front strut mounts to prevent tire damage.
- If your struts are original and have high mileage, replace them at the same time as the mounts to save on labor costs.
- KYB is a trusted aftermarket brand that often matches OEM quality for your Lexus.
Is Your Lexus Ride Not What It Used to Be?
The strut mounts on your 2006-2015 Lexus IS350 are wear-and-tear items. Over many years and miles, the rubber inside them cracks and hardens, and the bearing can wear out. When this happens, you'll start to notice changes in how your car drives and sounds. Ignoring these signs can lead to more expensive repairs and a less safe vehicle. This guide will help you understand the symptoms of failure and choose the right aftermarket parts for your car.
Symptoms of a Failing Strut Mount
If a strut mount is going bad, your Lexus will give you clear warning signs. Look out for:
- Clunking or Popping Noises: This is the most common symptom. You may hear a clunk, pop, or creak from the front suspension when driving over bumps, dips, or when turning the steering wheel at low speeds. This is the sound of loose metal parts hitting each other because the rubber insulator has failed.
- Steering Problems: Your steering might feel stiff, heavy, or like it's binding or catching as you turn. This often points to a worn-out bearing inside the mount.
- Excessive Vibrations: Worn mounts can no longer absorb road vibrations effectively. You might feel these vibrations through the steering wheel or the floor of the car.
- Poor Handling and Uneven Tire Wear: A failed mount can throw off your vehicle's alignment. This can cause the car to pull to one side, feel unstable in corners, and lead to your tires wearing out unevenly.
Known Issues, Recalls, and Service Bulletins
As of early 2026, there are no specific safety recalls or Technical Service Bulletins (TSBs) from Lexus or the NHTSA for the suspension strut mounts on the 2006-2015 Lexus IS350. Recalls for this vehicle generation typically involve the fuel system and airbags.
Choosing the Right Aftermarket Strut Mount Kit
When shopping for a new strut mount kit, you'll find OEM (Original Equipment Manufacturer) parts and several aftermarket brands. For the IS350, the choice generally comes down to quality and budget.
OEM-Level Quality: KYB
KYB is a Japanese company that is a known OEM supplier for Toyota and Lexus. Choosing a KYB strut mount kit is often the surest way to restore the original ride quality and performance without paying dealership prices. They are engineered to match the fit and function of the original parts. While some online forums have mixed reviews on aftermarket parts in general, KYB is consistently recommended for Japanese vehicles.
Standard Replacement: DEA
DEA is a brand that offers a standard, cost-effective replacement part. These mounts are designed to be a direct-fit replacement that will solve the problems of a worn-out mount, like clunking noises and poor handling. While they may not have the same long-term durability or exact ride feel as an OEM or KYB part, they are a reliable and affordable option for budget-conscious repairs.
| Part Type | Estimated Price Range |
|---|---|
| New Aftermarket (DEA, other value brands) | $10 - $50 |
| New Aftermarket (KYB) | $75 - $105 |
| New OEM (Lexus) | $150 - $215 |
| Shop Labor (for one pair) | $250 - $500 |
Frequently Asked Questions (FAQ)
Do I need a wheel alignment after replacing strut mounts?
Yes, absolutely. Replacing a front strut mount will alter your car's suspension geometry. A four-wheel alignment is required after the job is done to ensure your car drives straight and to prevent rapid, uneven tire wear.
Should I replace strut mounts in pairs?
Yes. Always replace suspension components like strut mounts in pairs (both front or both rear). This ensures that the handling and stability of your vehicle remain even and predictable from side to side.
Can I replace just the mount, or do I need a whole new strut?
You can replace just the mount. However, this job requires a dangerous tool called a spring compressor to disassemble the strut assembly. If your struts are old, it is often safer and more cost-effective in the long run to replace the entire strut assembly, which may come with a new mount already installed.
What is the difference between front and rear mounts on an IS350?
Front strut mounts are more complex. They include a bearing that allows the wheel to pivot for steering. Rear shock mounts are simpler, as they do not need to pivot. They primarily serve to attach the rear shock absorber to the car's body and insulate against noise. The parts are not interchangeable.
Technical Specifications
OEM Part Numbers: 48680-53031
The front strut mount kit for the 2006-2015 Lexus IS350 is a top-hat style mount that includes an integrated bearing to serve as a steering pivot point. It attaches to the chassis with three studs.
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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.
- Lexus IS350: