Library File Link. 48-2004. Purpose. Seller Name (first, middle, last, suffix).An RV Bill of Sale is a legal document that serves as proof of the sale and transfer of ownership of a recreational vehicle (RV) from a seller to a buyer. An Arizona motor vehicle bill of sale (ADOT Form 48-2004) is a legal document that transfers ownership of a motor vehicle from a seller to the buyer. Learn more about a trailer bill of sale in Arizona and why you may need it when registering your trailer. Download in PDF or Word here. The document contains information about the buyer and seller, details about the vehicle, the date of the sale, and the price.