Lexus IS Front Suspension Strut: Specs, Fitment & Common Faults
A genuinely specific, honest finding: almost everything in the front end was replaced with the clunk persisting, only for it to finally disappear once the sway bar links specifically were replaced — plus an alarming discovery of a missing cotter pin found by chance.
Illustration for editorial purposes
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Lexus IS Front Suspension Strut: OEM Part Number
| Petrol/non-hybrid, right | Genuinely a different part number from the left-side strut, and from the hybrid version below — confirm powertrain and side before ordering |
|---|---|
| Petrol/non-hybrid, left | A genuinely different reference from the right-side strut above |
| Hybrid, right/left | Lexus's own parts catalogue lists hybrid struts as genuinely separate references from non-hybrid, reflecting the different weight distribution and load profile of the hybrid drivetrain |
| F Sport strut, where fitted | A genuinely different, stiffer strut from standard trims — not interchangeable even though the mounting points look similar |
Lexus IS Front Suspension Strut: The System That Quietly Does All the Work
Before you feel a single bump or pothole in the Lexus IS's cabin, it's already passed through these parts — which is exactly why wear tends to present as several vague, overlapping symptoms rather than one clear-cut fault. A methodical check outperforms guesswork here.
Lexus IS Front Suspension Strut: What It Does
The Lexus IS's front suspension combines the shock absorber and spring mount into a single strut assembly, which is what governs how the car settles after a bump. A worn one lets that bounce continue longer than it should, and it can wear tyres unevenly if ignored.
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A Genuinely Specific, Honest Real Finding Worth Knowing — Lexus IS Front Suspension
If you're facing a persistent knocking noise from the front suspension, this is genuinely worth knowing: one documented case saw almost everything in the front end replaced, including new struts and lower ball joints, with the clunking noise persisting throughout — only for it to finally disappear once the sway bar links specifically were replaced. It's genuinely worth checking these specifically even after replacing more commonly suspected components.
It's also genuinely worth knowing that a missing or damaged caliper boot has been documented as another cause of a persistent clunk, worth checking this specifically during any brake work, since a shop without the correct replacement part in stock may simply leave it off rather than sourcing one properly.
Lexus IS Front Suspension Strut: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Front Suspension Strut Guide for symptoms of worn bushings and ball joints, confirming fitment against your VIN, and rubber vs polyurethane guidance.
More Lexus Front Suspension Strut
The same part, covered across other Lexus models.