The Power Products 1,488 in 3 Capacity, 9.5” Diameter Trailer Air Tank Assembly keeps you Ready for the Road Ahead , helping you maintain the performance of your air-actuated braking and suspension system. This heavy duty air tank assembly has been thoroughly salt spray chamber tested externally and internally to not only meet, but also exceed the industry standard for corrosion protection. FleetPride is your First Click in Heavy Duty .