Metelli 55-0135 Clutch Master Cylinder

The Metelli 55-0135 is a hydraulic clutch master cylinder designed to deliver reliable clutch actuation in modern hydraulic clutch systems. This master cylinder converts the mechanical pressure applied to the clutch pedal into hydraulic pressure, which is then transmitted to the slave cylinder to engage and disengage the clutch.

Key Features:

• 19.05mm bore diameter for precise hydraulic pressure control
• Aluminum construction for lightweight durability and corrosion resistance
• Anodized aluminum piston provides enhanced wear resistance and longevity
• OE-quality specifications meeting original equipment standards
• Factory tested for hydraulic seal integrity and pressure performance

Metelli specializes in hydraulic brake and clutch components, with each master cylinder undergoing rigorous quality control testing including pneumatic seal tests and endurance cycles at varying temperatures. This part cross-references to BMW OEM numbers 21521163900 and 21526758820, ensuring direct-fit compatibility for specific BMW applications.