HEADER TANK 1qt ALLOY 3/8in side 1/2in btm

Overflow Tanks With Filler Neck, One quart aluminum tanks are for cars with the manifold filler neck higher than the radiator top tank. Tanks can be easily mounted as the highest point of the cooling system. Features include a heavy duty aluminum neck with an 1/8th NPT port for an overflow fitting, a 1/2in NPT bung on bottom, for a supply, and a 3/8in NPT for a return line.