The Gauge Assembly for Ultra 3/6 Portable Fuel Tanks offers direct factory replacement parts for your portable fuel tank. Composed of the same components used in the original tank construction, the assembly is made up of replacement gauges for original Tempo and new Low Permeation fuel tanks. For Ultra 3G (620003 and 620003LP), Ultra 6G (620049 and 620049LP), 6G Bow (620040LP), and 9G Gas (630014LP). Direct factory replacement parts | Moeller Gauge Assembly for Ultra 3/6 Portable Fuel Tanks