Genuine OEM Volkswagen Clutch Master Cylinder, part number 1K0721388AF. This vital component is responsible for converting the mechanical force applied to the clutch pedal into hydraulic pressure. This hydraulic pressure is then transmitted to the slave cylinder, facilitating the engagement and disengagement of the clutch. It is typically located near the clutch pedal assembly. Constructed from durable materials, it ensures consistent and reliable hydraulic performance. Using a genuine OEM clutch master cylinder guarantees precise hydraulic calibration and long-term durability, essential for smooth and responsive gear changes.