RAM 3500 Diesel Fuel Cap

This is a fuel cap for the capless diesel filler neck on the 2014 RAM 3500. It's an exact replica of the cheap plastic one that comes on the truck from the factory (you can see it in the photos for comparison) but sometimes the dealer will throw them out or they might get lost. Technically the filler neck doesn't need a cap (it's meant to be capless) but some people like to leave the little plastic cap on there to prevent sand or snow from getting in the filler neck (even though the fuel door