This guide aims to provide 'general' information about BMW transmissions, such as common issues that we've encountered and tips on determining fitment compatibility.
Transmission are a problematic part in all makes of vehicle—and unfortunately BMW is no exception.
BMW has used many different transmissions across the years, but here are some common issues in their more modern vehicles:
According to the mechanics we work with, most modern automatic transmission issues can be resolved with a transmission control unit reset. In some vehicles this can be done without diagnostic tools, as shown in this video.
Broadly speaking the transmission manages the engine’s power through a series of gears, then outputting that power to the wheels via the rest of the drivetrain.
The varying gear ratios of the transmission are it’s primary feature—enabling the vehicle to travel at different speeds.
Modern automatic transmission use a mechatronics to control the internal mechanics—they are effectively the brain of the transmission.
Each model generation will typically have a few different types of transmission to account for different engines and drivetrains, etc.
Transmission hardware compatibility can be determined by matching the BMW part numbers from the catalogue, but it doesn’t take into account firmware and ISN (a form of VIN locking)—which is a major obstacle when installing second-hand ZF 8-speeds. In these scenarios with ZF 8-speeds we typically virginize the transmission to remove the ISN and update the firmware.
If you are looking for a replacement transmission you will need to supply your vehicle’s full 17-digit VIN along with a description of your transmissions fault.
Transmissions are often interchangeable between vehicles sharing a common platform.
Our collection includes the reliable ZF 8-speed transmissions – a staple in BMW’s modern models. You can find options such as the 8HP45 transmission, 8HP50 transmission, 8HP70 transmission, and 8HP75 transmission, all known for their durability and precision.
If you’re searching for a custom setup, our 8HP70 conversion and 8HP75 conversion options can offer enhanced performance tailored to your needs. These transmissions are ideal for BMW owners but also for those looking to optimise their vehicle’s performance with high-quality, factory-tested components.
Opting for BM Spares’ BMW transmission for sale provides a cost-effective solution without sacrificing quality. Each transmission is sourced from low-KM vehicles, ensuring that your BMW automatic transmission or BMW gearbox performs just as reliably as a brand-new unit. From BMW X1 transmissions to BMW X3 transmissions, we make sure all parts meet the highest standards of functionality and compatibility.
Even with its reputation for precision engineering, BMW isn’t immune to transmission issues. Owners of models equipped with the ZF 8-speed transmission, particularly in BMW X5 and F and G-Generation vehicles, may encounter some wear and tear over time. However, many problems can be diagnosed early, and simple resets or repairs can get your transmission back to optimal performance.
In some cases, a complete replacement is necessary, and that’s where our wide selection of BMW transmissions comes in handy. We also stock an exceptional range of top-of-the-line used BMW engines, differential centres, gear shifts, drive shafts and more.
Can't find what you're after? Don't know what part fits your car? Contact our sales team and they'll check our stock & provide you with a quote.
