Cheap BMW 8 Series Fuel Injection Pump

The BMW 8 Series (G15/G14/G16) ran from 2018 onwards, so all current used examples sit within the same generation — there is no separate facelift boundary to navigate yet. Fitment within this generation is driven primarily by engine code rather than model year, so a pump from an earlier 2018 or 2019 car may well suit a later one if the engine codes match. Confirm the engine code from your V5 or a VIN check before approaching a breaker, as ancillary and mounting details can shift quietly mid-production without a named facelift.

No — the 840d is a diesel and the 840i is a petrol, so the injection systems are fundamentally different and the pumps are not interchangeable. Fuel type is one of the most important fitment factors for this part, sitting alongside engine code. Always confirm your exact engine code with the breaker to make sure you are being quoted the correct pump for your fuel type.

On the BMW 8 Series, M Sport is a trim and styling package rather than a distinct powertrain, so it does not affect fuel injection pump fitment — what matters is the engine code, which is the same across trim levels sharing the same engine. You may find cosmetic differences on the donor car (different bumpers, sill trims, interior), but those have no bearing on the mechanical pump. Give your breaker your engine code and they can match accordingly, regardless of the trim designation on the car the part came from.

The xDrive four-wheel-drive system relates to the drivetrain, not the fuel injection system, so provided the engine codes match, the pump itself should not differ between xDrive and rear-wheel-drive variants of the same engine. That said, confirm this with the breaker against your registration, as ancillary bracket or sensor configurations can occasionally vary between drivetrain variants. Engine code remains the safest starting point for any fitment conversation.

The M850i uses a different petrol engine to the 840i, so the engine codes will differ and the pumps are unlikely to be a straight swap. Mechanical parts follow the engine code, not the badge, so matching on 'M850i to M850i' is the right approach rather than assuming any 8 Series pump will cross over. Check both engine codes carefully with your breaker before committing to a purchase.

Whether a used injection pump requires coding or pairing to your vehicle's ECU or immobiliser system is something you must confirm with the breaker or a BMW specialist against your specific registration — it is not something that can be answered reliably in general terms for this model. Modern BMW injection systems can involve electronic integration, and assumptions here could leave you with a part that needs additional work to function correctly. Always raise this question explicitly before purchasing a used pump.