I certify that, to the best of my knowledge, the title is. A Utah motor vehicle bill of sale, known as Form TC-843, is an official document that provides proof that a vehicle has been sold in the State of Utah.Edit, sign, and share utah bill of sale filled out example online. No need to install software, just go to DocHub, and sign up instantly and for free. Motor Vehicle Bill of Sale Also called "Form TC843," this bill of sale documents the sale of motor vehicles in Utah. Motor Vehicle Bill of Sale (Form TC-843)– Can be used to prove the sale and purchase of either a motorcycle or automobile in the state of Utah. A Utah motor vehicle bill of sale is written documentation of a transfer of vehicle ownership. Download Utah Trailer Bill of Sale template, modify and send for signing using BoloForms Signature. Looking to buy or sell a trailer in the state of Utah? Our Free Utah Trailer Bill of Sale Template is for you!