Are gearbox mount and automatic transmission mounting the same thing?

Yes. "Gearbox Mount" and "Automatic transmission mounting" refer to the same car part. Other common names include Automatic transmission mounting, Automatic Transmission Mount, Auto Gearbox Mount. The part is the same regardless of which name is used.

What are the signs of a worn gearbox mount?

A failing gearbox mount typically causes clunking or knocking noises when changing gear or pulling away, increased vibration through the cabin, and a noticeable jolt when you lift off or press the accelerator. In some cases the gearbox may visibly move more than it should.

What does a gearbox mount do?

The gearbox mount, or gearbox mounting, secures the transmission to the vehicle body or subframe and absorbs the vibrations and torque it produces. It works alongside the engine mounts to keep the drivetrain stable and isolate movement from the cabin.

Should gearbox and engine mounts be replaced together?

The mounts share the load of the drivetrain, so when one fails the others often wear soon after. It is worth inspecting all of them together, and enter your registration above to see the mounts confirmed to fit your exact vehicle.

How much does a gearbox mount cost?

The price of a gearbox mount depends on your exact vehicle and the brand you choose. Enter your registration above to see parts confirmed to fit, then compare prices from the brands we stock on this page. Free UK delivery on orders over £99.

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Gearbox Mount buying guide — what to know before you buy

The gearbox mount (transmission mount) secures the gearbox to the vehicle's subframe or body and absorbs the engine and transmission vibration that would otherwise be transmitted directly into the cabin. A worn or failed gearbox mount causes thudding on gear changes, vibration at idle, and allows the powertrain to move excessively, which can stress drive shafts and exhaust joints.

What gearbox mounts do

The gearbox mount consists of a metal bracket bonded to a rubber or hydraulic damper element, which in turn bolts to the body or subframe. The rubber absorbs vibration and small positional movements, isolating the drivetrain from the body. Hydraulic mounts, used on some vehicles, contain fluid chambers that provide additional damping at specific frequencies.

On front-wheel-drive vehicles the combination of engine mount, gearbox mount, and torque strut (dog bone) mount triangulates the powertrain to resist the torque reaction during acceleration — all three must be in good condition for smooth, controlled power delivery.

Signs of a failing gearbox mount

A thud or clunk felt through the gearshift on gear changes — particularly when changing direction from drive to reverse — is a classic sign of excessive powertrain movement. Vibration at idle that reduces when the gearbox is in neutral can also indicate a failed mount. Visible inspection of the mount under the vehicle with the engine off will show cracking, separation of the rubber from its metal inserts, or a noticeable sag where the rubber has collapsed.

A failed gearbox mount allows the gearbox to move and change the angle of the driveshafts, which accelerates CV joint and inner drive shaft wear.

Thud or clunk when changing gear
Vibration at idle in gear
Visible rubber cracking or separation
Gearbox visibly drooping when engine is running
Drive shaft vibration related to mount failure

Replacement

Gearbox mount replacement requires supporting the gearbox with a transmission jack before removing the mount, to prevent the gearbox from dropping or rotating. Replace engine and transmission mounts as a set where possible — if one has failed, others are likely nearing the end of their life. Use the registration lookup to confirm the correct mount for your vehicle.