4 oz tank measurements: 1 1/2 H x 2 1/16 W x 3 3/4 Long. Du-Bro Fuel Tanks are designed to be tough! Our fuel tanks will not split or crack from vibration or pressure. In fact, our fuel tanks can be used with pressurized fuel systems! Comes complete with clunk line, clunk, brass tubes and stopper, cap and fastener.