Genuine BMW
SKU: BMW-21521161874

BMW Clutch Slave Cylinder - Genuine BMW 21521161874

540i, 850Ci, 850CSi, 850i

Controls the operation of the pressure plate, engages and disengages the clutch



Backordered
No ETA
Price each: $229.99
Core charges are assigned to parts that have reusable components by manufacturers to encourage the return of the used units. Once you return the old part you will be refunded for your core charge, details regarding the return will be emailed to you once you place the order. Note: The customer is responsible for the cost of return shipping.

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Description

Details

SKU:
BMW-21521161874
FCP Euro ID:
236240
Made in:
Germany
Quality:
Genuine

OE Numbers

21521161874, 21521159537

MFG Numbers

N/A

Product Information

Mounted on the transmission

The slave cylinder modulates pedal movements to the clutch pack on BMWs with hydraulically controlled clutches. The system uses brake fluid and requires fresh fluid changes before the brake fluid becomes acidic and destroys the seals.

Clutch Slave Cylinder

A clutch slave cylinder is a hydraulic component in a manual transmission system that assists in engaging and disengaging the clutch. When the clutch pedal is pressed, hydraulic fluid is forced into the slave cylinder, which then moves the clutch release fork, allowing the driver to shift gears smoothly. It works in tandem with the clutch master cylinder to transfer force from the pedal to the clutch assembly.

Clutch Slave Cylinder Failure Symptoms
  • Difficulty Shifting Gears: If the slave cylinder fails, it may not fully disengage the clutch, making it difficult to shift gears smoothly, especially into first or reverse
  • Soft or Spongy Clutch Pedal: A common symptom is a spongy or soft feel when pressing the clutch pedal, as the slave cylinder fails to build adequate hydraulic pressure
  • Clutch Pedal Stuck to the Floor: In severe cases, the clutch pedal may stick to the floor or be slow to return, preventing proper clutch engagement and making it hard to drive.

About Genuine BMW

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. When ordering a Genuine BMW part you are guaranteed to get the same part that you would pick up from your local dealerships part department. Genuine BMW parts have been built to BMW’s stringent standards and are the same quality of the original parts used to build your Ultimate Driving Machine.

You may not realize this, but the parts that make up your BMW are not necessarily manufactured by BMW. No cause for concern, as BMW designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for BMW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine BMW parts box and find an OEM branded part inside, simply with the addition of a BMW logo.

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.

Fits These Cars

BMW 850i

  • 1991 BMW 850i Clutch Slave Cylinder
    Manual RWD Coupe 5.0L V12 M70 Gas
    Notes: 26.99 (mm) Diameter
  • 1992 BMW 850i Clutch Slave Cylinder
    Manual RWD Coupe 5.0L V12 M70 Gas
    Notes: 26.99 (mm) Diameter

BMW 850Ci

  • 1993 BMW 850Ci Clutch Slave Cylinder
    Manual RWD Coupe 5.0L V12 M70 Gas
    Notes: 26.99 (mm) Diameter

BMW 850CSi

  • 1994 BMW 850CSi Clutch Slave Cylinder
    Manual RWD Coupe 5.6L V12 S70 Gas
    Notes: 26.99 (mm) Diameter
  • 1995 BMW 850CSi Clutch Slave Cylinder
    Manual RWD Coupe 5.6L V12 S70 Gas
    Notes: 26.99 (mm) Diameter

BMW 540i

  • 1995 BMW 540i Clutch Slave Cylinder
    Manual RWD Sedan 4.0L V8 M60 Gas
    Notes: 26.99 (mm) Diameter
  • 1997 BMW 540i Clutch Slave Cylinder
    Manual RWD Sedan 4.4L V8 M62 Gas
    Notes: 26.99 (mm) Diameter; Up to 6/1996
  • 1998 BMW 540i Clutch Slave Cylinder
    Manual RWD Sedan 4.4L V8 M62 Gas
    Notes: 26.99 (mm) Diameter; Up to 6/1996

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Questions & Answers

Ask a question
Question Posted by a customer
Clutch paddle is on the floor. Could you email a diagram clutch hydraulic system. May just be a hose leak, no idea don't k ow how it works or what it looks like
Answer (Posted by FCP Euro Products Team)
All BMW clutch hydraulic systems are basically the same. There is a feed line from the master which goes to the clutch master and then a hydraulic pressure line that goes from the clutch master to the slave cylinder at the transmission. In most cases, it is the master cylinder that fails. You can see the general layout here: https://bimmercat.com/bmw/en/search/selectCar/E31/Cou/BMW+850CSi/USA/21_0056#10

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