Second Hand BMW 5 Series Transfer Box

Only xDrive (four-wheel-drive) variants of the BMW 5 Series have a transfer box — it is the unit that splits drive between the front and rear axles. Rear-wheel-drive 5 Series models, which make up the majority sold in the UK, do not have a transfer box at all, so if you have a standard RWD car you will be looking for a different component. Check your V5 or run a VIN check to confirm whether your car is badged or registered as an xDrive variant before searching for this part.

The xDrive option became available on the 5 Series from the E60/E61 generation (2003–2010), continued through the F10/F11 (2010–2017, facelift 2013), and carried on into the G30/G31 (2017–2023). Each generation used different transfer box designs, so a unit from one generation is very unlikely to fit another — always match to your specific generation as well as your engine code.

Both years sit within the F10 generation (2010–2017), but the facelift arrived in 2013 and BMW made running production changes throughout this period, so whether a specific unit crosses that boundary without issue is something you should confirm with the breaker against your exact registration and engine code. Supply your engine code — found on the V5 or via a VIN check — as that is the most reliable way for the breaker to match the correct unit. Never assume fitment is guaranteed without that check.

Trim level (SE, Sport, M Sport, Luxury) does not affect the transfer box — it is determined by the drivetrain and engine code, not the badge on the boot lid. An M Sport xDrive and an SE xDrive with the same engine code and gearbox type should use the same transfer box unit. The trim differences between those cars are cosmetic and chassis-tuning related, so focus on matching engine code, fuel type, and whether the gearbox is automatic or manual when sourcing from a breaker.

Yes, fuel type and engine code are both important because different engine variants can drive different transfer box specifications and mounting arrangements. Always give the breaker your full engine code (stamped on the block and shown via a VIN check) alongside confirming it is an xDrive model, as this is more precise than simply stating petrol or diesel. The breaker can then cross-reference their stock accurately against your car.

Whether a used transfer box requires any ECU pairing, adaptation, or immobiliser coding when fitted to your car is something you must confirm with the breaker or a BMW specialist before buying — this varies by build date and specification and is not something that can be stated as a blanket rule. It is worth asking the breaker upfront so you are not caught out by unexpected workshop costs after purchase.