Used BMW X4 Differential

The first-generation BMW X4, known internally as the F26, ran from 2014 to 2018 with no significant mid-cycle facelift; the second-generation G02 then took over from 2018 onwards, receiving a facelift in 2021. These are distinct platforms with different differentials, so confirming which generation you have before sourcing a used unit is essential. Check your V5 or run a VIN check to be certain of your build year.

Both years fall within the F26 generation (2014–2018), so there is a reasonable chance of compatibility, but the engine code is the critical factor — a differential from an xDrive28i will not necessarily suit an xDrive35i. Supply your engine code to the breaker rather than relying on the year alone, as drive ratios and unit specifications can vary between engines even within the same generation. Never assume fitment without the breaker confirming against your specific registration.

The F26 and G02 are completely different platforms, so a differential from the 2018-onwards G02 X4 is very unlikely to interchange with an F26 (2014–2018) without significant modification. These units differ in mounting, flanges, and electronic integration, making a cross-generation swap something to approach with extreme caution. Confirm with a breaker who can compare the exact part numbers against both registrations before purchasing.

Yes — the engine code matters more than the badge for a mechanical component like the differential, as different engines produce different torque outputs and can be paired with different final-drive ratios. Always supply your full engine code (found on your V5 or via a VIN check) to the breaker so they can match the specification precisely. Quoting only the xDrive badge is not enough to guarantee a correct match.

Trim level alone does not determine differential fitment; what matters is the engine code, fuel type (petrol or diesel), and gearbox type (automatic or manual). An xLine and an M Sport with the same engine and gearbox combination will use the same differential, so you do not need to hunt specifically for a trim-matching unit. Bear in mind that cosmetic ancillaries around the drivetrain may differ slightly between trims, but the differential itself is governed by mechanical specification, not badge.

Some BMW drivetrain components can involve electronic elements that interact with the vehicle's control units, and whether a used differential requires any coding to your specific car is something you should confirm with the breaker or a BMW specialist before buying. This is not something we can state as a blanket rule, as it can depend on build date and specification. Ask the breaker directly and factor in any potential coding costs when budgeting for the job.