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Clutch Master and Slave Cylinders

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About Clutch Master and Slave Cylinders

On a hydraulic clutch, the master cylinder at the pedal pushes fluid to the slave cylinder at the gearbox, which moves the clutch. This collection covers both, so you can find clutch master cylinders and clutch slave cylinders in one place.

A soft or sinking pedal, fluid leaks or trouble getting into gear can point to a worn master or slave cylinder. If the pedal sinks and you can see fluid at the pedal end, look at the master cylinder first. If fluid is leaking near the gearbox, look at the slave cylinder.

Our range includes clutch master cylinders, external slave cylinders and slave cylinders. Select your vehicle at the top of the page to see parts that fit. See also our clutch master cylinders. Top up and bleed the system with the correct fluid once fitted.

Not sure which one is the problem? Call us on 02 9413 3166. We are a family owned business in Chatswood, and you will get a straight answer, no upsell.

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Clutch Master and Slave Cylinders FAQs

What's the difference between a clutch master and slave cylinder?

The master cylinder is mounted at the pedal and turns your foot pressure into hydraulic pressure. The slave cylinder, at the gearbox, uses that pressure to move the clutch fork or release bearing. Together they operate a hydraulic clutch.

Should I replace the clutch master and slave cylinder together?

Often it's worth it. If one has failed from age, the other has done the same work and may not be far behind. Replacing both at once means bleeding the system only once.

What fluid does a hydraulic clutch use?

Most hydraulic clutches use brake fluid, often DOT 3 or DOT 4, and some share the brake fluid reservoir. Always check the reservoir cap or your owner's manual for the correct fluid.

How do I bleed a hydraulic clutch?

Bleeding removes air from the clutch hydraulics, usually by opening the bleed nipple on the slave cylinder while someone presses the pedal, then closing it before the pedal is released. Keep the reservoir topped up so no new air gets in. Some vehicles need a specific procedure.

How do I know which cylinder has failed?

A leak at the pedal end or fluid on the carpet points to the master cylinder. A leak at the gearbox or from the bellhousing points to the slave cylinder. A pedal that sinks without a visible leak is often an internal master cylinder fault.