Originally Posted by rxvrob
I have a 1996 with 454 and replaced the fuel filler neck hose . The hose is Gates fuel filler neck hose 23968. I also had to use two metal 90° turns because this fuel hose is thinner than the original hose and one kink if you don’t use the 90° elbows with hose clamps. after doing the fix I can still be gas easily without having to stop the old hose would not let it fill gas very good it was a lot thicker
On our old P3x coach - the actual filler hose was just plain unbraided straight pieces of hose 4-6” long and a piece of formed pipe to make up any difference, the forming was the needed 90’s.
The vent hose that runs from the tank to the fuel filler port was (when we owned it), braided hose from the tank to the fuel filler port. It’s braided because of its small diameter and that it needs to make turns - the braiding minimizes collapsing in the bends.
From a manufacturing cost perspective, it’s cheaper not to have to have a formed hose (there are no alternatives when it comes to radiator hoses which is why they are large diameter braided).