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.

• 31794 Technic Steering Arm 5 x 1 with Towball Socket (Type2) this part is a mold of it
• 15460 Technic Steering Gear with 3 Towball Joints, Compact Pair of this part