Clearly print or type all information, except signatures. If you purchase or sell a trailer, a New York trailer bill of sale can document the transfer of ownership for vehicle registration.MV-912: Vehicle Bill of Sale (PDF). English. Use this form to show proof of a vehicle ownership transfer through a private sale. Download. It documents information about the buyer, seller, and vehicle that is necessary for registration and titling. It does also require notarization. Use this free form for private transactions. It comes in a printable PDF format, and you can quickly fill it out using your completer. Learn about New York bills of sale for vehicles, boats, firearms, and more. Get answers to frequently asked questions and download the templates you need.