Wheel Cylinders

Wheel Cylinder Information

Wheel cylinders, also known as slave cylinders, form an important part of what stops your car when you press on the brakes. The wheel cylinder exerts force onto the brake shoes, pushing them into the drum and creating the friction to stop your car. When you press on the brake pedal, this generates hydraulic pressure, which acts on the pistons and then exerts mechanical pressure on the brake shoes.

The slave cylinder is the counterpart to the master cylinder and works at the opposite end of the hydraulic system.

If you need a slave cylinder replacement, you will likely have low brake fluid, the clutch will feel soft, and you will have difficulty changing gear. If you’re unsure whether you need to replace your wheel cylinder, then simply book a free brake check from Halfords.

When vehicles get older, brake wheel cylinders tend to have a habit of starting to leak, but the good news is they're usually pretty cheap and easy to replace. Wheel cylinders are important for your driver safety and should be maintained through regular checks and part of your yearly service. It is advisable to replace your brake wheel cylinder whenever you change your brake shoes or brake drums.

If you need advice on what is the correct wheel cylinder for your car, then why not call into your local Halfords store and one of our team will be happy to help you choose. You can order online today with free next day delivery on order over £20, or make use of our free click and collect service.

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Wheel Cylinder FAQs

What does a wheel cylinder do?

The wheel cylinder makes your brakes work on cars with drums. You press the pedal, the cylinder moves the shoes out, and that’s what slows the wheel down. If it stops doing its job, the car won’t brake properly. That’s when you’d want to get it checked and replaced, and Halfords can sort that for you.

What is the function of a wheel cylinder?

It turns the pressure from your foot on the brake pedal into movement at the wheels. The fluid pushes the shoes outwards so the drum can grip and slow the car. If your brakes feel uneven or not as strong as they should, it’s worth having them checked at Halfords.

How long do wheel cylinders last??

There isn’t a set lifespan because it depends on how and where you drive, and how well the system is maintained. They can last for years, but the seals wear out eventually and that can lead to leaks. If you feel a soft pedal or see fluid around the drums, it’s usually time for a change. Halfords can sort both the parts and the fitting for you.