.100 in. TIG welded fabricated aluminum coolant expansion/recovery tank. Comes with clear tube sight gauge, integrated mounting flanges, and in addition to the petcock & vented cap, two 5/16" barbed fittings 1X 90 degree & 1X straight. Size: 6" Tall, 4-1/2" Wide, 4-1/2" Deep. Tank: 1.75 qt. tank. Side Port: 1/4" N.P.T. Bottom Port: 1/4" N.P.T.;.