Universal products contain both truly universal products like batteries, but also products that don’t have fitment data. This means you can have a product that says in the title it’s for a Ford F-150 but if it doesn’t have fitment data it will still end up in the universal product category.
For example in your fitment filters let’s say you selected these specific vehicles… basically 1979 to 1993 Mustang only. But you have non-Mustang parts loading into your store.
Click on “Filters” and try selecting “Exclude universal fitment parts”. It should look like this:
It may take awhile for the app to delete all the universal fitment parts as there are a lot of them! But this should definitely let you display only the parts from the makes, models, sub-models and years that you have selected.