Edelbrock part #48143 Water Outlet, or thermostat housing, is designed for use with small-block Ford V8 engine applications. This black aluminum water neck is a great way to finish off your engine. It features a 15 degree neck and O-ring design for an improved seal, which also allows for removal without requiring a new gasket. Fits any 1-1/2" diameter outlet hose and even includes matching bolts.