Auto parts are a great way of profiting because there are so many different parts, so many different cars, and so many different people who are looking for cheap and affordable autoparts that can not be found elsewhere! This is where you come into play. People are looking for an incredible deal, right?
This is how you can find a great auto parts dropshipper. You want to go to a database, usually a website, that has a list of tons of wholesalers, liquidators, and most importantly, dropshippers. You want to check user and customer reviews of of the individual listed auto parts dropshippers and wholesalers in the database.
There are tons of databases out there, Salehoo is actually one of them, and will give you access to deals and products that most normal people simply do not know about. You can simply use their database to find the best deals, read up on customer reviews on specific dropshippers and find out which one will ship quality directly to the customer!
The important thing is that you start today and you start fast because there are many people who are trying to learn the ins and outs of selling on eBay. Also, here's a key to trying to profit big; try to make sure that you are targeting a specific niche. If you want to target autoparts as a whole, that's fine, but it will take a little more time to see the level that you are trying to achieve. If you do something more specific like "Honda auto parts" or "mercedes autoparts" you could have a good customer base once you set up your eBay store!