A good functioning brake servo makes it much more pleasant for Type 2 Bay window bus owners whilst slowing down. By using a vacuum a part of the necessary brake force is already developed so less pressure has be put on the brake pedal. There is no vacuum when there is a leak or a cracked membrane, resulting that it will be considerably harder to gain brake power. Your faulty brake servo can be replaced now by this new item and you can enjoy again driving with you classical car. Available each from stock.