What year and model of camper do you have. That information will help. Also a picture of your current hinge if you have it. That said a direct replacement may not be avaliable so you may have to modify another hinge. I believe the hinge came from the door vender as part of the door assembly so it may not be avaliable separately.
The more information you provide the better we can help and a good way to do that is to add a signiture with the make ,model and year of your camper.
2009 Seville VF32KS
2019 GMC Sierra 3500HD Crew Cab Denali.
6.6 Diesel standard box.