Wheel cylinder

A wheel cylinder (also known as a drum brake cylinder) is a key component in rear drum braking systems. It uses hydraulic pressure to push the brake shoes outwards against the inside of the brake drum, slowing the vehicle safely and smoothly. At A-Z Motor Factors Halifax, we supply high-quality rear wheel cylinders for all makes and models, with precise OE fitment and durable construction for long-lasting performance.

What Is a Wheel Cylinder?

A wheel cylinder sits inside the drum brake assembly and is responsible for converting hydraulic brake pressure into mechanical movement. It contains two pistons that push outward when the brake pedal is pressed, forcing the brake shoes to contact the drum.

Over time, wheel cylinders can wear out, leak brake fluid, or seize due to corrosion — leading to poor braking efficiency or MOT failure.

Signs You Need a New Wheel Cylinder

Replace your wheel cylinder if you notice:

• Reduced braking power

• Brake pedal sinking or feeling spongy

• Fluid leaking inside the drum

• Shoes contaminated with brake fluid

• Uneven rear braking

• MOT advisory or failure for brake imbalance

• Rear brakes locking or dragging

A leaking or seized wheel cylinder is a safety-critical fault and must be replaced immediately.

Left or Right (L/R) Fitment

Many vehicles use specific:

• Left-hand (LH) wheel cylinders

• Right-hand (RH) wheel cylinders

This is due to:

• Bleed nipple positioning

• Mounting orientation

• Brake line entry direction

• Internal piston layout

Using our registration lookup, you can instantly identify the correct L/R cylinder for your vehicle.

What’s Inside a Wheel Cylinder?

A typical wheel cylinder features:

• Two pistons

• Internal seals

• A return spring

• Bleed nipple

• Dust boots

• Metal cylinder housing

All components must seal tightly and move freely for safe braking.

When to Replace Wheel Cylinders in Pairs

For best results, replace both rear wheel cylinders at the same time because:

• If one leaks, the other is usually close behind

• Ensures balanced braking

• Prevents future MOT issues

• Helps avoid brake pull

Replacing both sides avoids uneven hydraulic pressure.

Related Brake Parts We Also Supply

A-Z Motor Factors Halifax stocks everything needed for a complete drum brake service:

• Brake Shoes

• Brake Drums

• Fitting Kits

• Handbrake Cables

• Brake Shoes & Drum Kits

• Brake Fluid

• Rear brake hardware kits

• Wheel cylinder repair kits

• Brake pipes & hoses

Complete everything in one order for convenience.

Why Buy From A-Z Motor Factors Halifax?

Since 1996, A-Z Motor Factors Halifax has supplied reliable, high-quality braking components at competitive prices. When buying wheel cylinders from us, you benefit from:

• OE-quality components

• Fast UK delivery

• Free delivery over £25

• Easy returns

• Trusted brands

• Expert product advice

• Perfect fitment using our registration lookup

Order online or visit our Halifax store for fast service and expert help.