Air charge coolant temperature sensor goes in the short side, bottom threads into intake manifold and the long side is for the heater hose. but i cannot find a replacement or what its actual name is. this one looks like it might work Ford E5TZ-18599-C - ELBOW. but this one Ford E5TZ-18599-C - ELBOW for a 3.0l ford ranger could work if i had an adapter for the bottom threads because of the thread size difference. id rather find the correct part instead of going Frankenstein on it.