Used BMW X4 Fuel Tank

The first-generation BMW X4 was the F26, produced from 2014 to 2018, with a mild facelift introduced in 2015 that brought updated bumpers and lighting. The second-generation G02 replaced it from 2018 onwards, with a facelift to the G02 arriving in 2021. Knowing which generation your car is will immediately narrow down which used fuel tank to search for, as the two generations do not share the same body and tanks are not interchangeable between them.

A 2017 X4 is an F26 (first generation, 2014–2018) and a 2019 X4 is a G02 (second generation, 2018 onwards), so these are entirely different platforms and the fuel tanks will not cross over. You need to source a tank that matches your specific generation — confirm the exact fit with the breaker against your registration number to be certain.

Yes — whether your X4 is petrol or diesel is the most important factor, as diesel and petrol variants typically use different fuel tanks due to differences in filler neck design, sender unit, and fuel pump compatibility. Within a generation, the engine code (found on your V5 or via a VIN check) is the single most useful detail you can give a breaker, as some ancillary fittings and pick-up pipe designs can vary between engine families. Always quote your engine code and fuel type when requesting a quote.

For a fuel tank, the trim level — whether xLine, M Sport, or M40i — makes no difference to fitment, as the tank itself is a mechanical component determined by generation, fuel type, and engine code rather than specification grade. You may find that a used tank sourced from a different trim comes with minor cosmetic differences around the filler cap surround or heat shielding, but the core tank will be the same. What matters is matching the generation (F26 or G02), fuel type, and engine code, not the badge on the tailgate.

For most BMW X4 applications the fuel tank itself is not directly affected by gearbox type, but it is worth mentioning your gearbox to the breaker because fuel pump and sender unit configuration can occasionally differ across variants built on the same platform. Give the breaker your full engine code and registration so they can cross-reference the exact part numbers rather than relying on gearbox type alone. Never assume a straight swap without the breaker confirming against your reg.

Both the pre-facelift and facelifted F26 sit on the same platform and generation (2014–2018), so in many cases the fuel tank is the same unit, but there can be mid-production ancillary and mounting changes that are difficult to confirm without checking part numbers. Name the facelift year (2015) when speaking to a breaker and ask them to verify the part number matches your exact build date and engine code before purchasing. Confirm compatibility with the breaker against your registration to be sure.