Dust caps

I purchased some used (new) 14" rims off a 2014 550 xl. These fit my RZR S900 but the dust caps pop off when wheel installed. Looking for dust caps that are deeper approx. 1". these are 3 3/4 ‘ hole on the rim. Went to dealer but they say the do not list the size so would have to order and see if they fit. Anyone have any idea’s???? I put 29’ big horns on and did not gain any width which that is what I was looking for.:scared2: