This highly polished handcrafted stainless steel thermostat water outlet dividers is used in the Hardin Marine custom fabricated stainless steel closed cooling system. It is designed to fit a B/B Chevrolet engine application. It is only specific to the Hardin Marine kit and may require plumbing modifications in other applications. It features (1) 1-3/4",(2) 1",(1) 1-1/4" push on hose connections as well as (2) alternate 1/8"npt steam or bypass ports.