A Pennsylvania vehicle bill of sale is a legal document formalizing the sale and purchase of a motor vehicle between a buyer and seller. Dated this ______ day of. ,.Pennsylvania Trailer Bill of Sale Sample. This form is used to obtain a Pennsylvania Certificate of Title for vehicles not currently titled in Pennsylvania, or which were repossessed (1. How to fill out the Pennsylvania Motor Vehicle Bill of Sale Form? Looking for a Pennsylvania bill of sale? We provide a free printable form with detailed guidelines and a document maker for custom forms. Utilize our Trailer Bill of Sale to document the sale of a trailer, ensuring protection for both the buyer and the seller. Is a Notary or a "Bill of Sale" Needed?