BRAKE MASTER CYLINDER, fits 1973-1979 Buses equipped with brake servo. Includes 251611243 and 211611817A x 2. ATE or FTE brand, Made in the EU, **PLEASE NOTE: This master cylinder will fit 1971-1972 with brake booster. You may need to replace the reservoir with the 1973-1979 version. 85mm hole spacing for reservoir. See item 211611313K. **PLEASE ALSO NOTE: A power bleeder must be used when installing this master cylinder. This is necessary to fully evacuate air from the unit.