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Clutch Master Cylinders

760 products

About Clutch Master Cylinders

Looking for a clutch master cylinder replacement? A clutch master cylinder is the part at the clutch pedal that pushes fluid down to the slave cylinder at the gearbox. When it wears, the pedal can feel soft, sink to the floor or leak fluid into the cab. This collection covers clutch master cylinders for hydraulic clutches.

Select your vehicle at the top of the page to see the master cylinders that fit your car, ute or 4WD. Many are listed by bore size, so it helps to check the size against your old part if you can.

Once a new master cylinder is fitted, the system needs bleeding with the correct fluid to remove air. If the pedal feels soft but there is no leak at the pedal end, the cause may be at the gearbox end instead. See our clutch master and slave cylinders.

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Clutch Master Cylinders FAQs

What does a clutch master cylinder do?

The clutch master cylinder converts the force from your foot on the pedal into hydraulic pressure, which is sent through the clutch line to the slave cylinder to release the clutch.

What are the signs of a bad clutch master cylinder?

Common signs include a soft or spongy pedal, a pedal that sinks to the floor or stays down, difficulty changing gears, a falling fluid level, or fluid leaking near the pedal or firewall.

Can a clutch master cylinder fail without leaking?

Yes. Worn internal seals can let fluid bypass inside the cylinder, so there's no visible leak. The usual sign is a pedal that slowly loses pressure or doesn't fully release the clutch.

Is a clutch master cylinder hard to replace?

On some vehicles it's a simple bolt in job. On others it's tucked up behind the dash. Either way, the clutch hydraulics need bleeding afterwards. If you're not confident, have it done professionally.

Are clutch master cylinders universal?

No. Bore size, mounting, pushrod length and fittings vary between vehicles. Select your vehicle at the top of the page or check the listing details, and give us a call if you're not sure.