Kindly note: This item may have a cast number printed on it. The cast number and the spare part code are usually not the same. This fan include a key. Used in Fimot M3-motors. Cast number 42290189, 3GZV304001-5. If metallic with same dimensions needed please use BOL codes 3GZF303018-2, 3GZF443230-3 and 9ABA135-26.