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.Seller Name (first, middle, last, suffix). Bill of Sale ; Library File Link. Simplify property handoffs with our quitclaim bill of sale template. Easily record the ownership transfer of merchandise or equipment. An Arizona trailer bill of sale is a contract used between two (2) parties when transferring a utility or boat trailer. Get a free Arizona bill of sale form or take a look at our simple form builder to have a really customized bill of sale suitable for you. Trailer Bill of Sale – Utilized in the lawful transfer of a utility trailer from one person to another. A bill of sale, proof of purchase, proof of payment, or proof of sale, is a legal document that is used to transfer ownership and verify a sale.