Find the correct Servos for your vehicle
In the United States, servos are called 'brake boosters'. Say what you like about the Americans, they do have a knack for making things sound much simpler.
That's exactly what servos are - brake boosters which help the driver by reducing the braking effort on their part. Practically all vehicles with hydraulic braking systems will use servos when braking.
They contain a vacuum which increases the braking force you apply with your brake pedal, which it then transfers to the master cylinder to provide the increased braking force.
Don't panic - that's the physics lesson over. Now for the fun bit. You can order parts online from Halfords and pick them up in-store. Need a hand? No problem - just pop into a store and ask one of our helpful colleagues.