This Firestone air tank provides a source of compressed air for an air spring system. Tank has 5 - gallon capacity and (2) 38 in. NPT ports. Tank is enamel coated to resist corrosion, tested to be SAE J10 compliant and capable of 150 psi. Features Provides compressed air source for an air helper spring system Allows for faster inflation of air springs Holds 5 gallons of compressed air Includes (2) 38 in. NPT ports Steel tank with brass fittings Resists corrosion with internal and external enamel coating Is SAE J10 compliant Operates at up to 150 psi of maximum pressure Specs Tank dimensions 20.75 in. long x 9.5 in. diameter Tank capacity 5 gallons Inflation ports 38 in. NPT PSI Maximum of 150 2 - Year limited warranty