F**K YOU TAIWANESE/CHINESE MADE JUNK

Do you know the specs for the thermostat OD? Maybe the stat is the culprit?
IDK, It's a stock replacement stat from carquest and it fits fine with plenty of room in the old housing. I shaved a little off the edge with the grinder and it fits like a glove now. I might shave the housing/neck recess a liitle bit too just incase for future repairs.