Replacement part needed
Hello there. I am confident we can help, though I am afraid we only sell full handle sets for this type of set, not the inner pull. Apologies for any inconvenience. The 82-086 is close--but the issue here is that the 82-086 has a thumb lever and key lock that are offset towards the bottom mounting screw. It looks from your photos that the thumb lever and key lock on your handle set are perfectly centered between both mounting screws. Please confirm. If so, go with the 82-030A instead. This should work just fine for your door.
Keep in mind that the kind of damage seen on your inside pull can be indicative of rollers and tracks that need maintenance. See our guide below for details.