A wheel cylinder is usually located inside a brake drum, above the brake shoes. Its purpose is to apply pressure to the shoes when the brake is applied. Once applied the brake shoes then push out against the brake drum and with the friction caused stop the vehicle. They have a similar design to a brake master cylinder. Designed with a piston at each end and a rubber boot to protect them, they often wear causing a brake leak. Therefore a replacement is required. At Aceparts.co.uk we stock a wide range of quality wheel cylinders for all types of cars and vans, so we're 99.9% sure we will have the wheel cylinder you require. Be sure to order online with Aceparts for a hassle free, money saving experience.