Ferris 84002029 is the caster axle shaft Clinton Tractor supplies for this application. It is listed as fitting 17 Ferris models.
What 84002029 fits
This caster axle shaft covers 17 Ferris models. Commonly ordered for the 5902018 - ISX800 Series w/ 52" Mower Deck (ISX800KAV2452SS), 5902020 - ISX800 Series w/ 52" Mower Deck (ISX800BE2752SS AUS), 5902021 - ISX800 Series w/ 52" 3-in-1 Mower Deck (ISX800B2752SRDCE). If your machine isn't listed, check the serial number before ordering.
Which numbers it replaces
84002029 replaces 5106587. If your parts manual or the old box shows any of those numbers, this is the correct current replacement — no fitment change.
Specifications at a glance
This caster axle shaft measures 51 in ID. The full attribute list is in the Specifications section above.

