I would send BW an email/call and check if that serial number is legitimate. Other than that, seems very legitimate from this end. Chinese are getting good at copying anything/everything out there. Heck, worked with a vendor who used a Chinese MFG to manufacture parts, but parts that didn't meet our specifications were supposed to be "scrapped". Little did we know they were turning them around for a profit in the gray market, which is how they eventually end up in Ebay as knockoffs. Bet same thing goes on with the Ebay "Greddy" intake manifolds and such.Does it look right?