Fit of 2017 Ford F-250 Factory Underbed Rail Kit Puck Covers

Question:

I have the autoslide 21000. I removed it and went to put plastic plugs in and they will not fit over underbed rails. Do I need to cut the plugs?

asked by: Dan

Expert Reply:

The factory pucks won't have been altered by the Demco Hijacker Autoslide - Ford Super Duty Prep Package - 21K # DM8550038 so you shouldn't need to trim you factory plugs at all. We don't have the replacement factory plugs but we do have the Replacement Puck Plug Covers for Elite and Signature Series Fifth Wheel Rails (Qty 2) # 58199 that fit the actual elongated holes of the factory system as well if that small cover is what you are seeking. These are rubber not plastic so they will be more pliable and give you a good seal.

It sounds like your factory plugs don't fit, which doesn't make sense because the pucks aren't altered by the hitch, so if they fit once they will fit again.

expert reply by: Jason S