Product review (5 stars): Fits ENO20A / 175D3296
If the back of your knob happens to have the code EN020A/ 175D3296, this should be your knob. Perfect replacement for my GE Washer.  Search no more.  I share this code with you because I had trouble finding the part number after thinking, hey this would be simple since it seems to have the number right on it. Not that simple. After not finding it, I went to get model number of machine but the previous owner of this washing machine seems to have removed the model number and, of course, part numbers have many incarnations serving many different models and manufacturers.  Anyway, ended well because this baby popped right on and we are back in business.  I will probably get another one to have on hand because the design is weak. The plastic fins are doomed to break.  One reviewer said he got only about 2.5 years out of one of these.  Glad I did not call a service professional because this was an easy fix once I found the part. Hope someone benefits from my experience.