@Gordon Nichols posted:Original VW tank:
OD of the filler neck is 2-1/4”
OD of the VW gas cap is 2-1/2”
Thanks Gordon, but I'm talking about the flip-tops on Spyders. But after further consideration, I need to verify all the dimensions, not just the filler ID. I don't want to buy a cap based on the filler neck only to have it too large or too small for the hole in my hood.
Looks like I have to peel myself up of the couch and go down there. May as well go for a drive while I'm about it.