Im with Jay Zed. I have built multiple vehicles, motorcycles, quads, jetskis all primarily from ebay parts. Will i get a dud every once and a while ? Yep. Usually its a chinese part that I already know I’m taking a chance on. For the most part if you can do your homework and look VERY closely at all the listing info you can tell if its a legit part from a legit seller. Also if you are wanting a “original” piece just change the filter to “used” so you weed out all the new aftermarket crap and have a better chance finding a nice original factory installed piece.