Many of you already know and have probably used these guys for replacement parts. I have too and highly recommend them. Earlier this year when my pressure washer wasn't working right I gave them a visit. They actually had a video on fixing my exact problem and which part was needed.
More recently I went to use my lightly used Porter Cable finish nailer but it would not do anything. Went to eReplacementparts and found the part probably responsible and ordered it. This evening I installed it and it's working again.
Not only do they carry parts for most major brands but they also help folks like myself figure out which I need. If you haven't tried them before and you're the least bit handy with tools, give them a try the next time something breaks.