This is the door seal and fits your 1983-93 Ford Mustang convertible, this seal fits either side of the car. By replacing the door seals you will notice a big difference in the amount of wind noise inside your car and the doors will fit tighter and not rattle as much. The door seals are sold as individual and fits either the right or left side of your convertible Mustang, we also have a listing with both door seals that will save you some money.