The grommets on that side cover are of two different sizes.
The top grommet is part # T3020135 (this is the same grommet on the cover for the fuse box/ignition switch cover so you will have to probably buy them in pairs).
The bottom grommets are part # 2300130-T0301 (these probably come in pairs as well).
If I were you I would take the grommet off of the fuse box cover and go to an auto parts store to see if you can find a match. It will probably save you quite a bit of money.
Oh and welcome to the site.
