Bosch O-Ring For. Chainring - Black

O ring

For mounting the chainring.
Washer 678512 additionally required.

Because it is an original spare part from Bosch, it is 100% tailor-made.
This O-ring protects the locking ring against loosening, even if the torque of the locking ring is not applied precisely.

Product compatibility:
Active Line Plus (BDU3XX)
Active Line (BDU3XX)
Performance Line (BDU3XX)

Bosch Article Number: 1270016107