I knew i was not getting a brand new product, and since the new ones are $400+, $30 was a really great price. The unit seems to work fine, however, the big plastic gear that cracked in half on my original part is already yellowed and cracking toward the middle. I guess to be expected for the price, and since its an original part, but still a bummer because who knows how long before it suffers the same fate as my first one. So if you use the roof a lot (which i don't) you should probably throw down for a new one. Wish sellers would take pics with the cover off the gear (super easy to remove) so you could see exactly what you're buying. Anyway, works, cheap, i'm happy!