Defrost problem

whirlpool Model # GB2SHTXTS00 refrigerator not cooling. trying to figure out the correct part… I came up with W10165748 control board on my drawings and also 12002756 frost kitDoes any have a picture of the frost kit ??? 12002756 to make sure it is the correct part before I order it…which one do I need?? bobbyharvell@yahoo.com