A bill of sale isn't generally required in Arizona, but it can be useful when buying a junk car without a title. Seller Name (first, middle, last, suffix).Bill of Sale ; Library File Link. An Arizona Bill of Sale is a document used to officially record the sale of a car, boat, or firearm. Ownership is legally transferred to the buyer. After signing, the buyer must keep an original copy of the bill of sale and certificate of title to register the vehicle with their local DMV office. The bill of sale is not a form of title, but you could use it to obtain the vehicle's title from the DMV. I sold my car just yesterday and the buyer and I opened up my adot app and I had him fill in his information under the sold notice. An Arizona general bill of sale is used to record the sale of goods and the amount paid in a private transaction. Same goes for the bill of sale.