Freezer door upper hinge

A small plastic piece (not cover) broke at the upper hinge of the LH freezer door. Now the door seems move more freely/easily. Also it doesn’t stay sealed tightly. If the fridge door is closed the freezer door will pop open. It looks like I may need a whole new hinge assembly (part # 218215245). Can I get just the small pastic piece? Do I need a tech to replace? How much is the part?

Here is tha parts breakdown
Replacement parts for FRS26ZNH models | AppliancePartsPros.com

Take a look at Item 38 in Section 3. If you click on the picture a new page with better views will open, click on them to expand them.
Looks like the hinge assembly is riveted so the separate pieces are not available at least they do not show up in the parts.