Used Mercedes-Benz GLB Transfer Box

Yes, but only on GLB models fitted with 4MATIC four-wheel drive — these have a transfer box to split drive between the front and rear axles. Two-wheel-drive GLB variants (front-wheel drive only) never had a transfer box fitted, so if your car is a 2WD model you will not find this part on it. Check your V5 or run a VIN check to confirm whether your GLB is 4MATIC before searching.

The GLB (X247) launched in the UK for the 2020 model year and is still in production as a single generation, with a facelift arriving for the 2024 model year. Because there is only one generation so far, you are not dealing with a cross-generation fitment question, but the 2024 facelift may have brought ancillary or mounting changes — confirm this with the breaker against your exact registration. Supplying your engine code from the V5 is the most reliable way to match a used transfer box correctly.

Both sit within the same pre-facelift X247 generation, so the transfer box itself is likely to be compatible if the engine codes match — the engine code matters more than the model year alone. That said, ancillary fittings and mounting brackets can change quietly mid-production, so confirm the exact part numbers with the breaker against both registrations before buying. Never rely on year alone to guarantee a used part will drop straight in.

This is something you must confirm with a Mercedes-Benz specialist or the breaker rather than take as given — ECU pairing and immobiliser coding requirements are not something we can state as fact for this part. Some Mercedes driveline components do require software initialisation after fitting, so budget for a diagnostic session when sourcing a used transfer box. Ask the breaker whether they have any knowledge of coding requirements for the specific unit they are supplying.

Trim level does not affect transfer box fitment — what matters is whether your car is 4MATIC, and which engine code is fitted, not whether it is badged SE, Sport, or AMG Line. All 4MATIC GLBs within the same engine code share the same driveline layout regardless of trim. You may find cosmetic or equipment differences between a breaker's donor car and yours, but these are irrelevant to whether the transfer box itself will fit.

Yes, engine code is the single most important detail when matching a used transfer box, and different engines (including petrol versus diesel variants) can use different transfer box units even within the same 4MATIC model range. Check the engine code on your V5 or via a VIN check and supply it directly to the breaker so they can match it against the donor vehicle. Do not assume a transfer box from a petrol GLB 4MATIC will interchange with a diesel GLB 4MATIC without verification.