Well i swapped out the thermo. Thx everyone. Still leaking tho. seems to be coming from the part the arrow is pointing to ...
...Is there a gasket besides the one that goes around the thermostat? Maybe one that goes between 16321 and 16323?
Also, the old thermo was 1/2 gone. only thing left was the front 1/2.. the other 1/2 was nowhere to be found. could it have been in there so long it rusted and broke off? Dont sound good if it broke off. It was not inside 16323.. what if it is further up or down the cooling system?