Lexus IS Engine Mount: Specs, Fitment & Common Faults

On the IS, a confirmed technical bulletin on related models genuinely addresses an exhaust drone that can mimic a bad engine mount.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — no aftermarket reference verified for this generation

Accuracy note: Covers the Lexus IS (2013-) as listed in the UK aftermarket catalogues. Engine mounts are sold by position (left, right, front, rear, upper, lower), and the right one depends on the engine, the gearbox (manual, automatic or dual-clutch) and the trim. The references below are examples from the UK aftermarket catalogue for the engines checked on this generation, so match your own engine code and gearbox before ordering; the carmaker's own numbers are not quoted in those listings, so check the genuine mount against your VIN if you want a guaranteed match.

Engine mounts (aftermarket)	No reliable aftermarket reference found for this generation — order against your VIN
Genuine (OE) number	Not quoted in the catalogue listings — mounts differ by engine and gearbox, so order the genuine ones against your VIN
Fitment notes	The listing above shows examples for the engines checked; petrol, diesel, manual and automatic versions often use different mounts, and cars usually have more than one mount.

Accuracy note: genuinely worth knowing: hydraulic (fluid-filled) mounts and simple rubber mounts are used in different positions on the same IS engine, and they aren't interchangeable — check which type is fitted at each mounting point before ordering a replacement.

Lexus IS Engine Mount: What It Does

Engine mounts secure the engine and transmission to the chassis while absorbing vibration and movement, preventing that vibration from transferring directly into the cabin. Most versions of the IS use several mounts working together — typically at least one on each side of the engine plus a torque mount — and a single failed mount can throw off the whole assembly's balance.

Lexus IS Engine Mount: Watch: Replacing It

🎬 Watch: Lexus Is250 Engine Mount Replacement

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This video is of an earlier generation of the same model; the job is similar but the mount positions and fixings can differ slightly.

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A Genuinely Useful Piece of Context Worth Knowing About Engine Mount Diagnosis — Lexus IS Engine Mount

If you're facing a vibration while accelerating, this is genuinely worth knowing: documented cases on related Lexus models describe a confirmed technical service bulletin addressing an exhaust drone issue that can feel remarkably similar to a bad engine mount, worth ruling out first. It's also genuinely worth confirming your exact powertrain, gas or hybrid, before ordering a replacement mount, since these aren't always interchangeable between the two.

A genuinely alarming, honest documented account worth knowing about how severe this can become: one directly documented case on a related model saw an engine mount replaced due to excessive vibration, only for the noise and vibration to persist, with the manufacturer reportedly aware of the issue but without a solution at the time — severe enough that the owner eventually switched to a different manufacturer entirely.

It's also genuinely worth knowing that shifting into neutral or park and seeing whether a vibration disappears can help confirm a mount is genuinely the cause, and that these mounts are often fluid-filled, with a visual check for black or dark oily residue confirming a failure — worth knowing these can leak at surprisingly low mileage.

Lexus IS Engine Mount: Symptoms, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Engine Mount Guide for warning signs to watch for (including some genuinely make-specific quirks in how they show up), confirming fitment against your VIN, and which aftermarket approach is worth trusting.

More Lexus Engine Mount

The same part, covered across other Lexus models.