Seat Leon Engine Mount: Specs, Fitment & Common Faults

On the Leon, a genuinely useful clue: a clunk that started right after clutch or DSG mechatronics work often means a mount wasn't correctly reseated during that repair.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — engine mount (aftermarket) Meyle 1001991022 / Corteco 49388316

Accuracy note: Covers the Seat Leon (Mk3 2012-2020) 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 Mount — Rear (aftermarket)	Borsehung B18764, Original Imperium 34256
Engine Mount — Front (aftermarket)	Borsehung B18517, Corteco 49388316 (DSG/dual-clutch)
Engine Mount — Rear (upper or lower) (aftermarket)	Original Imperium 610396, Meyle 1001991022
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.

A Genuine Clue: Did the Clunk Start Right After Gearbox Work? — Seat Leon Engine Mount

A genuinely useful diagnostic clue worth considering: if a knocking or rattling noise began specifically right after a clutch replacement or DSG mechatronics unit repair, rather than developing gradually on its own, it's worth suspecting the mount wasn't correctly reseated or torqued during that gearbox work — a mount that's simply been left slightly loose or misaligned during reassembly can produce exactly this kind of new, sudden clunk, and revisiting the same garage to have the mount bolts specifically checked is a reasonable first step before assuming an entirely new, unrelated fault has developed.

Worth knowing if a dealer dismisses a new DSG clunk as "normal": several owners report being told exactly this after a new gearbox clunk appeared, sometimes with an extended warranty offered as a goodwill gesture rather than the noise actually being investigated and fixed. An extended warranty is a reasonable consolation, but it's not the same as the noise being resolved — if you're not satisfied the explanation makes genuine engineering sense, it's worth asking for the specific mount and mechatronics mounting bolts to be checked directly rather than accepting "that's normal" as the final word.

Seat Leon Engine Mount: Watch: Replacing It

🎬 Watch: SNAPPED engine DOGBONE MOUNT on my SEAT LEON CUPRA R...

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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.

Seat Leon 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 Leon 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.

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Seat Leon 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 Seat Engine Mount

The same part, covered across other Seat models.