Clutch master cylinder – Mercedes W123 Pedal system

Description

Clutch master cylinder / clutch release cylinder for W123, W126 T2 / L operating variants.

The clutch master cylinder forms the hydraulic connection between the clutch pedal and the clutch release cylinder. This component is essential for a correctly functioning clutch and ensures a clear, predictable pedal feel and reliable clutch operation in Mercedes-Benz vehicles.

Reliable pedal feel with an affordable solution
Replacing a worn clutch master cylinder restores the familiar and safe feel of the clutch. Additionally, a properly functioning master cylinder prevents the need to constantly top up brake fluid. This clutch master cylinder is manufactured as a high-quality reproduction in OE quality and designed to deliver stable and reproducible hydraulic pressure build-up. The result is smooth disengagement, reduced wear on the clutch release cylinder and transmission, and a noticeably better shifting experience during daily use.

Assembly and technical considerations

The assembly is of average difficulty and requires standard tools, such as open-end wrenches, pipe wrenches, and a bleeding kit. Before assembly, the dimensions, connections, and design must be carefully checked. Installation by a specialized workshop is recommended.
During installation, it is important to use only DOT 4 / ENV6 DOT 5.1 brake fluid, protect painted parts from brake fluid, and check the prescribed tightening torques and pedal clearance. Following these guidelines ensures long-lasting and trouble-free operation.

Compatibility and application
This clutch master cylinder is suitable for Mercedes-Benz vehicles with a hydraulic clutch system. For correct application, it is recommended to check the chassis number (VIN), the flange and bolt pattern, and the bore of the cylinder before installation.

• Mercedes-Benz W123 (1976–1987):
  300 D, 240 D, 230, 230 E/CE, 200/200 T, 230 T, 250/250 T, 280/280 C/280 CE/280 E/280 ET and 300 DT
• Mercedes-Benz W126 (1979–1993):
  280 S/SE/SEL and 300 SE/SEL.
• Mercedes-Benz T2:
  L 406 DG, L 408 DG, L 508 DG and LK 408 G

Key features
• Direct replacement for the original clutch master cylinder
• Suitable connections for pipe and hose
• Easy-to-install design, vent according to instructions