Installing new filler neck grommet...

The one I installed looks like the below. It is from Filler Neck Supply Company, model GR004-02. But like I said, I don't think it's the filler neck, I think it is the size of the opening on the gas tank. I forget the measurements, but this grommet was supposed to cover that size.

upload_2018-9-7_14-34-48.png