The brake system is one of the most important parts of safety on a truck. Air brakes are a specific kind of brake that helps to ensure a clean and efficient stop. In semi truck air brake systems, the air allows for the coupling of multiple vehicle units, controlling the braking of all units from the cab.
That puts the “stop” in “one stop shop.” That being said, there are a large number of components in the air brake system. You’ll need an air compressor, air storage tanks, air tank drains, safety valves, proper pedals and supporting cables, and more. If there is any area of your truck that you should make sure is properly maintained with the highest quality components, this would be it.