Used BMW X4 Cylinder Head

The BMW X4 F26 generation ran from 2014 to 2018, so both years sit within the same generation, which is a good starting point for compatibility. However, fitment of a cylinder head depends primarily on the engine code rather than the model year — supply your engine code (found on your V5 or via a VIN check) to the breaker so they can match it precisely. Minor ancillary or mounting changes can occur mid-production even within a generation, so always confirm against your registration with the breaker before buying.

The F26 ran from 2014 to 2018 and the G02 from 2018 onwards — these are distinct generations built on different platforms and using different engine families, so a cylinder head from an F26 is very unlikely to suit a G02. Engine codes between the two generations differ significantly, meaning you should treat them as entirely separate searches. Always quote your engine code to the breaker rather than relying on the X4 name alone.

Yes, it matters a great deal — these are different engines with different cylinder heads, even though they all carry the X4 badge. The xDrive20d, xDrive30d, and M40d use distinct engine codes, and a head from one will not suit another. Give the breaker your exact engine code from the V5 or a VIN check, and they will source the correct unit.

No, trim level does not affect cylinder head fitment — xLine, M Sport, and M40i are largely cosmetic and equipment packages rather than mechanical distinctions, with the exception that M40i and M40d denote a different engine entirely. What matters is the engine code, fuel type, and whether your car is automatic or manual. You may receive a head pulled from a lower or higher trim than yours and it will fit the same engine without issue.

2018 is the changeover year between the F26 (2014–2018) and the G02 (2018 onwards), so your car could be either generation depending on exactly when it was built and registered. This matters significantly for a cylinder head, as the two generations use different engine families. Run a VIN check or check your V5 for the engine code and supply that to the breaker — they will need it to confirm the correct head rather than going on the year alone.

Yes, petrol and diesel cylinder heads are not interchangeable — they are fundamentally different components designed around different combustion and injection systems. Always confirm your fuel type with the breaker alongside your engine code. Supplying both the engine code and fuel type upfront will help the breaker locate the right head quickly and avoid costly mistakes.