BMW 26117884388 – Driveshaft damper / flex disc (guibo)
This part is commonly known as a driveshaft damper, flex disc or guibo. It is a driveline coupling located at the ends of the driveshaft, designed to absorb vibration and shock loads between the transmission and the differential.
Why would this part need replacement?
As long as the damper remains intact, there is no reason to replace it. However, the harder the vehicle is driven — and especially when power levels are increased — the rubber flex disc can deteriorate over time, crack, and eventually fail. This often results in driveline play, knocking noises, and harshness.
Upgrade option for non-M BMW models?
The stronger M-model flex disc is sometimes used as an upgrade on popular models such as the M140i, M240i, or M340i. On higher power setups, the standard damper can become a weak point, and this part offers a reinforced OEM solution without resorting to aftermarket solid mounts.
Note: Always verify compatibility for your specific vehicle (model, year, drivetrain, driveshaft bolt pattern and dimensions). If you are unsure, please contact us before ordering and we will assist you.
Original OEM applications
- BMW M5 F90 (S63 4.4L)
- BMW X5 M F95 (S68 4.4L)
- BMW X6 M F96 (S68 4.4L)
- BMW M5 G90 (S68 4.4L)
- BMW M5 G99 (S68 4.4L)
The following BMW part numbers may be compatible for upgrade use with this component. Always confirm fitment before installation.
- 7 518 443
- 26 11 7 546 425
- 26 11 7 605 629
- 26 11 7 610 061
- 7 546 425
- 7 605 629


