For a while I've had an issue with a fuel smell in the cabin on hot days, and since everything else is pretty solidly buttoned up now that left the very strong possibility that the deteriorated rubber on the gas cap was not sealing properly. Before I made the second order in as many weeks from Midwest, I decided to see if I could come up with anything from my local Autozone- and to my surprised apparently succeeded. The part that worked (after several trial fits with other caps- it definitely pays to befriend the staff at your local parts store!) was a Cooling System Technologies 6810 Fuel Cap. It fits nice and snug, and seems to seal a lot better. Looks a bit out of place given it's all metal vs. the black plastic top of the original- but I'll happily deal with that over sucking down fuel fumes on long trips!