Replacing parts does not lower the products standards. It is the same unit even enhanced and improved with something new. It can be comparable to a turkey filled with stuffing for Thanksgiving. It is the same fowl animal with something better inside. The outer covering remains the same despite changes inside.
Breaking down of your washing machine when it is most needed is really painful and the things become even more disturbing when you don't have any idea about its different spare parts. So it is really important to have complete knowledge about your appliance. Your little awareness about the washing machine will save you from those tough times, helping you to fix it on a temporary basis.