BMW Clutch Master Cylinder - Genuine BMW 21526879477

Product Information

BMW Clutch Master Cylinders diagram for 328i xDrive, 228i, 428i xDrive, 428i, 440i, & more

The clutch master cylinder is a critical component of a hydraulic clutch system in manual transmission vehicles. It is responsible for converting the mechanical force applied by the driver’s foot on the clutch pedal into hydraulic pressure, which then engages or disengages the clutch. The master cylinder is connected to the clutch pedal and the slave cylinder via a hydraulic line.

• Difficulty Engaging or Disengaging the Clutch: A failing master cylinder can make it hard to press the clutch pedal down or may result in the clutch not fully disengaging, causing difficulty in shifting gears
• Spongy or Soft Clutch Pedal: If there are air bubbles in the hydraulic system due to a leak or failure, the clutch pedal may feel spongy or soft, requiring more effort to engage the clutch
• Fluid Leaks: Visible leaks around the clutch master cylinder or along the hydraulic line can indicate a failure. This may be noticed as fluid pooling under the vehicle or around the clutch pedal area

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Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.