Junk car parts can be found online through auto recycler websites and classifieds. Classified listings are used by individuals that part out their cars and recycling companies that commercially sell used car parts.
Craigslist has a section completely devoted to auto parts. The website includes listings from both personal and commercial companies, but do not allow for specific part searches.
Auto recyclers, such as Car-Part have online databases that list all the available parts for sale. Their search engine allows a user to input the part a buyer is looking for as well as the type of vehicle the component belongs to.