Used BMW 3 Series Transfer Box

Only the xDrive four-wheel-drive variants of the BMW 3 Series have a transfer box — it is the unit that splits drive between the front and rear axles. Standard rear-wheel-drive 3 Series models (the vast majority sold in the UK) do not have a transfer box at all, so if you have a non-xDrive car this is not the part you need. If you are unsure whether your car is xDrive, check your V5C or run a VIN check before searching.

The xDrive four-wheel-drive option was introduced on the E90-generation 3 Series (2005–2012) and carried through to the F30 generation (2012–2019, facelift 2015) and the current G20 generation (2019–present). Not every engine or body style within those generations was offered with xDrive, so confirm your car is listed as an xDrive model on your V5C before ordering a transfer box. Earlier generations such as the E46 (1998–2006) did not offer xDrive.

Both years fall within the F30 generation (2012–2019), but the 2015 facelift brought some running changes, and transfer box compatibility across that boundary is not something we can guarantee — this is a question to put directly to the breaker with your registration and engine code. The engine code (found on your V5C or via a VIN check) is the most important detail to supply, as the transfer box follows the drivetrain specification rather than the model year alone. A good breaker will cross-reference against your registration to confirm before supplying.

The E90 (2005–2012) and F30 (2012–2019) are different generations with different driveline architecture, and their transfer boxes are not interchangeable. Always source a transfer box from the same generation as your car, and ideally from a car with a matching engine code. Confirm exact compatibility with the breaker using your registration number before purchasing.

Trim level — SE, Sport, M Sport, or Luxury — does not affect transfer box fitment; what matters is the engine code, gearbox type (automatic or manual), and the xDrive drivetrain. An M Sport xDrive and an SE xDrive with the same engine code will use the same transfer box, so do not pay more or search differently based on trim. The cosmetic and suspension differences between trims have no bearing on this mechanical component.

This is an area where we recommend you confirm directly with your fitting garage or the breaker, as BMW xDrive transfer boxes may involve electronic control units that could require configuration to your vehicle. Breakers experienced with BMW xDrive cars will be able to advise whether the unit they are supplying needs any programming before it will operate correctly in your car. Do not assume a direct plug-and-play swap without checking this point first.