Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 24118 Technic Panel Car Mudguard Arched 15 x 2 x 5 this part is a print of it
• 24118pr0002 Technic Panel Car Mudguard Arched 15 x 2 x 5 with Vent Grille Print Model Right Side Pair of this part