This came out of a 97 Eclipse GSX with a minor case of crankwalk.  Anywho, that symbol is all I have to go on, I would assume that it is OEM but the oil holes DON'T line up.  And so far neither do the aftermarket ones I have found.  I have the dealership ordering a new thrust bearing so we can compare.  But if that does not work then... 
Anyone recognize that symbol?