Driveshaft

Most BMW output shafts are relatively well built and can often last the lifetime of the car without needing to be replaced, but the front wheel shafts on AWD vehicles can be subject to more strain.

Some of the more recent BMWs, particularly the cheaper FWD models such as the F39 X2 and F48 X1, do not have a great build quality—these vehicles are already having output shafts problems.

The most common issues with all BMW output shafts are split/damaged boots, which allow for the grease to exit and for contaminants to enter, killing the U-joint. The U-joint can also just wear out with age.

A split boot will usually be visible only during servicing, but a worn U-joint can present as an abnormal driving noise or vibration.

Output shafts transfer rotational power from the differentials (or in FWD vehicles the gearbox) to the wheels.

There are usually multiple, non-exchangeable types of output shaft within any given model generation. There are obviously different drivetrain configurations, but there can also be variations between similar cars to account for different levels of power output, and this doesn’t necessarily align with engine or fuel type.

The best way to determine fitment compatibility of an output shaft is to match the BMW part numbers from the catalogue. This can be done by decoding your vehicle’s VIN in a BMW EPC (electronic part catalogue.)

If you don’t have access to an EPC, provide our team with your vehicle’s 17-digit VIN—and we’ll check our stock for a compatible match.

There is some interchangeability of output shafts between vehicle’s sharing a common platform, but is typically limited to sister models (1-2 Series, X3-X4, etc.)