Air reservoirs, found within the Brakes > Air Brake Systems of commercial vehicles and some passenger cars, store compressed air used to actuate the vehicle's braking system. These robust tanks provide a reserve of pressurized air ensuring reliable stopping power, even with fluctuations in engine output or prolonged braking events. Typically constructed from steel or aluminum, air reservoirs are designed to withstand high pressures and constant cycling. They are essential components of systems utilizing air brakes, often positioned between the air compressor and the brake chambers. Examples in our selection include reservoirs from Wabco, as well as MAN parts with MPNs like 51158015173 and 81.51201-0416.