There are dozens (maybe a couple hundred) different models of Kenmores with the 158 prefix - spanning a couple of decades, at least. There are current replacement parts available for some of them (maybe most of them) but not for others.
When you look at the model #, it should start with 117, 148, 158, 385 or 516, (these denote the manufacturer) then there'll be a period, then some numbers after that from which the common model name is taken. (i.e. - 158.18033 is an 1803, 516.890 is a model 89)
There is no rhyme or reason to Kenmore's numbering system. The 1702 was made before the 1802, but the 1703 might have been made after. The model number can use 2, 3, 4 or all five of the numbers that come after the period.
