BMW 8 Series Turbo Replacement Parts

The engine code is the single most important detail for matching a turbo to your 8 Series, as different engines within the same model year can use completely different turbocharger assemblies. You'll find the engine code on your V5C registration document or via a VIN check. Always give this code to the breaker when requesting a quote, rather than relying on the badge or bhp figure alone.

The current G15 8 Series coupe (and related G14 convertible and G16 Gran Coupe) launched in 2018, so a 2019 and a 2022 car sit within the same generation. However, fitment still depends on both cars sharing the same engine code, as several different engines were offered across the range. Confirm the engine codes match before proceeding, and check with the breaker against your registration for any mid-production ancillary or mounting changes.

Yes, in this case trim does reflect a genuine mechanical difference: the M850i uses a different engine (the B58 or S58 family depending on variant) compared to the 840i's four or six-cylinder units, so they absolutely require different turbos. Trim badges on the 8 Series directly correspond to different engine families, so you should treat each as a distinct fitment group. Give the breaker your engine code alongside the badge to make sure you get the right unit.

No – petrol and diesel engines use entirely different turbocharger designs and they are not interchangeable, even within the same 8 Series generation. The 840d uses a diesel-specific turbo matched to its compression and exhaust characteristics, while the 840i uses a petrol-specific unit. Always confirm your fuel type alongside the engine code when contacting a breaker.

Whether a replacement turbo requires any ECU or immobiliser coding to your specific vehicle is something you need to confirm directly with the breaker or your fitting garage against your registration, as this can vary and we cannot state it as fact here. A mechanical turbo itself does not typically hold unique coding, but associated sensors or electronic actuators on some units may need attention. Always raise this with whoever is fitting the part before purchase.

The gearbox type does not directly affect turbo fitment, as the turbo is part of the engine assembly rather than the drivetrain. What matters is that the engine codes on both donor and recipient vehicles match. That said, always confirm with the breaker against your registration that there are no other ancillary differences between the two cars that could affect compatibility.