Where Is the VIN Located on a Boat Trailer?
The vehicle identification number of a boat trailer is often located on two sticker-type plates: one is on the side trailer frame behind the tongue while the other is on the right taillight just outside of the side frame. The VIN can also be located in the rear bumper.
New boat trailers should have a visible VIN from the original manufacturer. According to the Department of Motor Vehicles, if the VIN is missing or cannot be verified from the boat trailer, the owner should bring the trailer to a DMV safety inspection location for inspection and for possible reassigning of VIN.