Second Hand BMW 8 Series Gearbox Mount

Yes, all variants of the G15/G14/G16 BMW 8 Series (produced from 2018 onwards) have a gearbox mount, as they use either an eight-speed automatic gearbox or, on some early variants, a manual option, both of which require a transmission mount to secure the gearbox to the subframe. The 8 Series is rear-wheel drive or xDrive all-wheel drive, so a gearbox mount is a genuine fitment on every variant. UK breakers regularly part out 8 Series cars, so sourcing a used mount is realistic, though supply is more limited than on volume models.

The G15 8 Series ran from 2018 through to the end of production, with a subtle facelift arriving for the 2022 model year, so a 2019 and a 2022 car sit either side of that production update. The gearbox mount follows the engine and transmission combination, and both 840i models share the B58 straight-six engine with the ZF eight-speed automatic, which makes compatibility plausible — but mounting bracket or ancillary changes can occur mid-production without a formal generation change. Confirm the part number against your registration with the breaker before buying.

Yes, engine code is the most important detail for gearbox mount fitment because different engines pair with different transmission housings and mounting configurations — a 430i-badged B46 four-cylinder, an 840i B58 straight-six, an M850i N63 V8, and an M8 S63 V8 are mechanically very different underneath. Always supply the breaker with your engine code, which you can find on your V5 or via a VIN check, rather than relying on the badge alone. This single detail gives the breaker the best chance of matching the correct mount to your car.

Trim level in the cosmetic sense does not affect gearbox mount fitment — M Sport adds styling and chassis tuning rather than a different gearbox or mounting arrangement. What does matter is the drivetrain variant: an M8 uses the S63 V8 with its own transmission setup, so its gearbox mount is unlikely to be the same as the one on an 840i or M850i. Focus on engine code and whether the car is xDrive or rear-wheel drive when speaking to the breaker, and ignore trim badges beyond those mechanical distinctions.

The G14 convertible, G15 coupe, and G16 Gran Coupe all share the same platform, engines, and ZF eight-speed automatic gearbox, so the gearbox mount itself is likely common across body styles where the engine and transmission code match. Body style is not a fitment factor for the gearbox mount specifically, which is determined by the drivetrain rather than the roofline. That said, confirm the part number with the breaker against both registrations to be certain, as minor differences can exist.

Give the breaker your full VIN or registration, your engine code (found on the V5 or a VIN check — for example B58 for the 840i, N63 for the M850i, or S63 for the M8), and confirm whether your car is rear-wheel drive or xDrive, as all of these affect which mount is correct. Year of manufacture is also useful, particularly if your car is a 2022 or later facelift car, as the breaker can check whether any mounting changes apply. The more precise your engine and drivetrain details, the better your chance of getting a correctly matched part first time.