BMW 1 Series Engine Mount: Specs, Fitment & Common Faults

A genuinely useful finding: the front crank pulley is actually a bonded rubber vibration damper that can fail separately, mimicking engine mount symptoms — worth checking this first, especially after recent belt or tensioner work.

Generation covered: this guide is for the third-generation 1 Series (F40, 2019–present), with particular focus on 2019–2023 registered examples now old enough for parts to be a common search. Check your logbook or VIN if you're unsure which generation you have.

Illustration for editorial purposes

OEM Part Number: 6788608

Genuinely important to know: engine mount rubber composition and stiffness on the 1 Series is tuned to the exact engine and power output fitted — a mount that looks identical but is rated for a lower-power version of the same engine can transmit more vibration than the correct part.

F20/F21 (2011-2019), N13 1.6 petrol, genuine right engine support mount	BMW OEM: 6788608 — shared with F30/F31 3 Series of the same engine
Left engine mount	A genuinely different part number from the right-side mount, not a mirror-image of the same component — BMW sells these individually, and both are typically worth inspecting together given they wear at a similar rate

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 1 Series 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.

BMW 1 Series Engine Mount reference plate

A Genuinely Useful Finding Worth Knowing Before Assuming a Mount Fault — BMW 1 Series Engine Mount

If the engine has developed roughness, vibration, or a grumbling noise at idle, particularly following recent work on the drive belt or tensioner, this is genuinely worth checking before assuming the engine mounts themselves are at fault: the front crank pulley is actually a bonded rubber vibration damper, not simply a solid pulley, and this specific component is known to fail, causing vibration and noise that can easily be mistaken for a genuine engine mount problem. It's particularly worth checking this component first if it's recently been disturbed during belt or tensioner replacement work, since that disturbance can sometimes reveal or accelerate an existing weakness in it.

A genuinely useful, money-saving finding worth checking first: if you're not sure when the sway bar links were last replaced, it's worth checking and replacing these first if a clunk is suspected to be engine mount related, since they're considerably cheaper and easier to replace than the mounts themselves.

It's also genuinely worth knowing that the automatic stop-start system fitted to related BMW models is genuinely hard on engine mounts, causing them to collapse over time faster than on cars without this system.

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 BMW Engine Mount

The same part, covered across other BMW models.

BMW 1 Series Engine Mount: Specs, Fitment & Common Faults

OEM Part Number: 6788608

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A Genuinely Useful Finding Worth Knowing Before Assuming a Mount Fault — BMW 1 Series Engine Mount