This over the wheel fresh water tank has a capacity of 110 gallons. Also include is a 40 PSI, 4.5 GPM Flowjet transfer pump with hoses and filter. This complete setup was taken out of a Chevy Express with a HydraMaster 4.8 CDS. All of the equipment was installed new last July and as of the time the tank was removed the unit only had 42 hours on it. Please message me with any questions.