So... to explain what exactly Im trying to figure out....Someone (definitely not me) stripped the inner threads of the oil pan drain hole like a jackass & now I'm leaking oil. So I'm trying to find either A: an oversized self threading oil drain bolt or B: A rubber drain plug to solve this issue but not sure what size to get. The OEM drain plug (#92066-1174) says size 12x15 but doesn't specify 12x15 what, mm? cm? ft? mi? What does 12x15 mean? I just want to know what I need to ask for in order to get the right size. I'd appreciate any knowledge that anyone can drop on me cause I feel stuck like Chuck.