Our refridgerator fan motor(samsung side by side)

Question

my husband ordered a ref. fan motor for model SR2544 but the one we ordered does not fit.so now have a ref. which is not freezing.the temp now is about80.we dont know where to order the right fan, we think this is the problem. It seems like this model no longer exist we bought it about4 years ago, they are selling one just identical to the one we have with a different model number, but it is not the same size fan.