ive broken this part off on both my windsor motors i have (302 AND 351) Its right on top of the upper intake closer to the passenger side, it has a plug with 2 wires running to it and its connected to the line running into the heater core. I think its some sort of valve for diverting coolant to the heater core but i have no idea. I need to buy on so i need to know what its called. thanks.