Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
My older caps are. I'm thinking if not vented the fuel pump would eventually draw a vacuum and fuel flow would cease. Look at the inside of your cap, is there a hole in the center? If so it's probably vented.