INFINITI FX35 (2003-2012) Suspension Strut Mount Replacement Guide
Restore your FX35's sharp handling and eliminate suspension noises by understanding and replacing worn strut mounts.
- A clunking noise over bumps is the most common sign of a failed strut mount on an FX35.
- It is highly recommended to replace struts, mounts, and bellows at the same time to save on labor costs.
- KYB is considered an OEM-quality replacement, while Monroe offers a reliable mid-tier option.
- A wheel alignment is mandatory after replacing strut mounts to prevent tire damage and handling issues.
Is Your FX35 Making Clunking Noises? It Could Be the Strut Mounts
A common complaint from INFINITI FX35 owners is a persistent clunking, knocking, or popping sound from the front suspension, especially when driving over bumps or making slow turns. While several parts can cause this, a worn-out strut mount is a frequent culprit. The rubber insulator inside the mount degrades over time, becoming hard and cracked. This allows metal-on-metal contact, creating noise and vibration that you can hear and feel. Ignoring this can lead to poor handling, accelerated tire wear, and damage to other suspension components.
Choosing the Right Aftermarket Strut Mount for Your FX35
When replacing your strut mounts, you have several aftermarket options. Since the labor to replace the mount is the same as replacing the entire strut, it is highly recommended to replace the struts, mounts, and bellows (dust boots) at the same time. This ensures all components are fresh and saves you from paying for the same job twice.
Brand Quality Tiers
- Top Tier (OEM Equivalent): KYB is a Japanese brand often considered an original equipment manufacturer (OEM) for many vehicles. Their strut mounts are designed to meet or exceed original specifications, making them an excellent choice for restoring your FX35's factory ride and handling. While generally high quality, some users have reported noise issues with KYB bearings in other applications, but they remain a top choice.
- Mid-Tier (Reliable Aftermarket): Monroe is a well-known and trusted name in the aftermarket suspension world. Their mounts are designed to reduce noise and vibration and are a solid, reliable option that often provides a slightly softer ride compared to KYB. They are a great balance of quality and value.
- Value Tier: Brands like DEA and Westar offer a more budget-friendly solution. These parts will get the job done and are a viable option if cost is the primary concern. However, they may not offer the same longevity or precise fit and finish as the higher-tiered brands.
Pro Tip: Replace in Pairs
Always replace strut mounts in pairs (both front or both rear). If one side has failed, the other is likely not far behind. Replacing them together ensures balanced suspension performance and predictable handling.
| Brand Tier | Part Cost (Per Mount) | Expected Quality & Longevity |
|---|---|---|
| Top Tier (KYB) | $60 - $75 | Excellent, matches OEM performance. |
| Mid-Tier (Monroe) | $50 - $65 | Very good, reliable performance and comfort. |
| Value (DEA, Westar) | $40 - $55 | Good, budget-conscious choice for basic function. |
Known Issues, Recalls, and TSBs
There are no specific recalls or Technical Service Bulletins (TSBs) from INFINITI or the NHTSA for suspension strut mount failure on the 2003-2012 FX35. Failures of this part are considered normal wear and tear. Several recalls exist for this vehicle, but they are related to airbags and steering column components, not the suspension struts or mounts.
Important: Check Other Suspension Parts
Noises from the front end of an FX35 can also be caused by worn sway bar links, control arm bushings, or ball joints. During the strut mount replacement, it is a perfect time to inspect these other components for wear 🎬 Watch: Common front end problems to check on your FX35 and replace them as needed to fully restore your suspension.
Frequently Asked Questions (FAQ)
Do I need a wheel alignment after replacing strut mounts?
Yes. The strut mount is a key part of your front-end alignment. Replacing it will alter the current settings. You must get a professional wheel alignment after the job is done to prevent uneven tire wear and ensure proper handling.
Can I replace just the strut mount and not the whole strut?
You can, but it's not recommended. The labor involved requires removing and disassembling the entire strut assembly. Since you've already paid for the labor, it is most cost-effective to replace the strut, mount, and dust boot all at once, especially on a high-mileage vehicle.
Is this a difficult DIY job?
Yes, this is an advanced DIY job with a difficulty of about 6 out of 10. 🎬 Watch: How to replace the full front shock and spring assembly It requires specialized tools, including a spring compressor, which can be extremely dangerous if not used correctly. For most owners, professional installation is the safest and most reliable option.
What's the difference between a strut mount for the first gen (2003-2008) and second gen (2009-2012) FX35?
The parts are different. The first and second-generation FX35 use different part numbers for the strut mounts. It is critical to order the correct part for your specific model year 🎬 See this walkthrough on how to replace the mount kit to ensure proper fitment.
Helpful Videos
Technical Specifications
OEM Part Numbers: 54320-1CF1B 54320-CG001 54320-CL00A
The strut mount for the INFINITI FX35 is a rubber and metal component that includes an integrated bearing for steering pivot. There are different parts for the first generation (2003-2008) and second generation (2009-2012) models.
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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.
- INFINITI FX35:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your FX35 Making Clunking Noises? It Could Be the Strut Mounts
- Choosing the Right Aftermarket Strut Mount for Your FX35
- Brand Quality Tiers
- Pro Tip: Replace in Pairs
- Known Issues, Recalls, and TSBs
- Important: Check Other Suspension Parts
- Frequently Asked Questions (FAQ)
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