671/2 - 70 2000 aluminum thermostat housing.Order by PART#1522AClickhere, to view the nut for this thermostat housing that holds the sending unit in place. Clickhere, to view special gasket with the metal tab to ground the sending unit. 2 are required one on each side of the housing. Clickhere, to view the electrical sending unit that usually corrodes within the housing. You may want to add one or more of these parts onto your order when purchasing the housing.