Hello. Does anyone know the size of the Meistersatz oil pan drain plug? My original plug does not fit. I think they are both M12s, but not sure what pitch or length to buy for the aftermarket pan. I tried 1.25 and 1.75 pitch and no luck. (So I'm hoping it's a 1.5...) Anybody else have this issue? I'm hoping it's not a manufacturing defect in the pan because I unfortunately already bolted it in so no dirt would get in engine. Live and learn.

My car is a '76 240D W115.