PNEUMATIC SYSTEM AIR RESERVOIR. The pneumatic system air reservoir is a pressure storage component used in vehicle air suspension systems or other pneumatic equipment. The reservoir stores compressed air supplied by the compressor and provides a stable air supply for air springs, ride height control systems and other pneumatic mechanisms. The unit typically consists of a sealed metal tank made of high-strength steel or aluminum designed to withstand high pressure. It includes ports for air lines, valves and pressure sensors. The reservoir stabilizes system pressure and reduces compressor load by storing compressed air for rapid system response. Damage may include corrosion, air leakage or structural deformation. Our catalog includes genuine OEM air reservoirs, quality replacements and inspected used components without structural damage. Selection is based on VIN number, pneumatic system configuration and part number. Proper replacement ensures stable pneumatic system operation.