Second Hand Mercedes-Benz GLB Gearbox Mount

Yes, all Mercedes-Benz GLB models have a gearbox mount — the GLB uses a seven-speed dual-clutch automatic gearbox (7G-DCT or 8G-DCT depending on variant) as standard across the range, and this transmission is secured to the subframe via a gearbox mount. There is no manual gearbox option on the GLB, so every example sold in the UK will have this part. Used mounts from breakers are a common and straightforward search.

The Mercedes-Benz GLB (X247) launched in 2020 and is a single generation running from 2020 onwards, with a facelift arriving in 2023 — the 2023 refresh is the key boundary here. Mounts from a pre-facelift (2020–2022) car and a post-facelift (2023-on) car may differ, and rather than assume compatibility across that boundary you should confirm with the breaker against your specific registration and engine code. The engine code from your V5 or a VIN check is the most reliable detail you can supply.

Yes, engine code is the single most important detail when sourcing a gearbox mount for the GLB — the mount design can vary between the 1.3-litre petrol (M282, used in the GLB 180 and 200) and the 2.0-litre petrol or diesel engines (M264 for petrol, OM654 for diesel, found in the GLB 200d, 220d, 250, and 250e). Always quote your engine code to the breaker rather than just the badge, as a GLB 200 petrol and a GLB 200d diesel may use different mounting configurations. Your engine code appears on the V5 logbook or can be retrieved via a VIN check.

No — trim level has no effect on gearbox mount fitment for the GLB. Whether your car is a Sport, AMG Line, AMG Line Executive, or any other trim, the gearbox mount is determined by the drivetrain configuration, not the interior or cosmetic specification. When ordering from a breaker, focus on matching the engine code, fuel type, and whether the car is front-wheel drive or 4MATIC all-wheel drive, as these are the mechanically relevant factors.

It may matter — while the transmission type is the primary factor, the mounting arrangement on a 4MATIC all-wheel-drive GLB could differ from a front-wheel-drive variant due to differences in the transfer case and drivetrain layout at the rear of the gearbox. Confirm whether your car is FWD or 4MATIC with the breaker alongside your engine code, as supplying both details gives them the best chance of matching the correct part. Never assume a mount from a 4MATIC car will drop straight into a standard FWD GLB or vice versa without that verification.

Possibly — the GLB shares its MFA2 platform with the A-Class (W177), B-Class (W247), and CLA (C118), and some of these models share drivetrain components including gearbox mounts where the same engine and transmission combination is used. However, platform sharing does not guarantee the mount is identical, as body structure and subframe geometry can differ between models. Give the breaker your GLB's registration, engine code, and VIN and ask them to cross-reference before purchasing — do not assume cross-model fitment without that confirmation.