Finding Used Auto Parts Online
Car-Part.com is it. This site is the most usefull used auto parts locator on the internet. If you go to their site you will see that you can enter the criteria into the form, click Search and you have an extensive list of parts that you can filter through by price, location, description, etc.
The nice thing is that you can sort the search by location, where you will get a list of salvage yards and auto parts suppliers in your town that carry your part.
I have used this site for over 6 years and it is still the most powerful used auto parts locator tool.