Auto Forums: People love to talk about their cars. More than that, the people who can and will fix their own cars love talking about how they do it. They band together and form forums much like people who are fans of the same celebrity. Auto Forums are a great place to find car parts online as most forums will have a sort of "classifieds" section for the buying and selling of car parts online. In the event that the forum doesn't list the exact part you are looking for, chances are you will connect with people who know where to find it and where to find it for the best price.