Used BMW 8 Series Oil Pump

Every variant of the BMW 8 Series has an oil pump — it is a fundamental engine component required by all petrol and diesel internal combustion engines in the range, including the 840i, 840d, M850i and M8. There is no 8 Series variant that relies on a different lubrication principle, so the part exists across the board regardless of body style or drivetrain. What does vary is which specific pump fits which engine, so the engine code is the detail that matters most.

Trim level itself does not determine oil pump fitment; what matters is the engine code underneath the badge. The 840i uses the B58 straight-six and the M850i uses the S58 or N63 V8 depending on generation, so these are fundamentally different engines requiring different pumps — the trim name is simply pointing you to a different engine, not a different specification of the same one. Always confirm your exact engine code from your V5 or a VIN check before ordering, and share it with the breaker.

The G-series 8 Series launched in 2018 as a coupe (G15), with the convertible (G14) and Gran Coupe (G16) following shortly after, and a mid-cycle refresh arrived around 2022. For the oil pump specifically, fitment is driven by the engine code rather than the model year, so if your engine code matches a pre-facelift donor car the pump may well be the same unit — however, whether any ancillary or mounting changes were introduced at the facelift is something you should confirm with the breaker against your registration rather than assume. Giving the breaker your full engine code and registration is the safest approach.

No — the E31 8 Series and the current G-series 8 Series share only a nameplate; they are entirely different generations separated by nearly 20 years of engineering development, and their engines have no meaningful overlap. The E31 used engines such as the M60 and M62 V8 and the S70 V12, none of which are carried over to the G-series lineup. You would need to source a pump specific to whichever generation and engine code your car actually has.

Body style — coupe, convertible or Gran Coupe — has no bearing on oil pump fitment whatsoever, as the pump is entirely determined by the engine fitted to the car. A G15 coupe and a G16 Gran Coupe with the same engine code will use the same oil pump. Focus on confirming your engine code from your V5 or a VIN check, and pass that to the breaker.

Yes, the 840d diesel (using a B57 six-cylinder diesel engine) and the 840i petrol (using a B58 six-cylinder petrol engine) are different engines and will require different oil pumps, even though they sit in the same body and share a model year. Fuel type is one of the key factors that determines which pump is correct, alongside the precise engine code. Always confirm your engine code with the breaker rather than relying on the badge alone.