Whats nice about tracking the parts and where you bought them is so later on down the road you can look up and see when it was you replaced a part etc.
I don't know how many times I've looked at a part and thought that it was recently replaced etc. then I look it up and realize it had been much longer than I had thought.
What's really crazy is the fact that I am now begining to replace parts that I have already replaced! Pefect example is my door handles. Thought I bought them a year or two ago, look it up and turns out I bought them 7 years ago. Now they have tiny pitts in them and need to be replaced. I sent an E-m to Ames and explained, they told me to put them in a box send them back and they will replace them. Have yet to do so because I realized after I complained that it was 7 years ago not two! Rut row!