Ferris 5021733SM is the knob, plastic Clinton Tractor supplies for this application. It is listed as fitting 5 Ferris models.
What 5021733SM fits
This knob, plastic covers 5 Ferris models. Commonly ordered for the 5901849 - IS6200 Series w/ Caterpillar Diesel, 72" Mower Deck & ROPS (IS6200ZC48D72), 5901850 - IS6200 CE Series w/ Caterpillar Diesel, 72" 3-in-1 Mower Deck & ROPS (IS6200ZC48D72SRDCE), 5901851 - IS6200 AUS Series w/ Caterpillar Diesel, 72" Mower Deck & ROPS (IS6200ZC48D72 AUS). If your machine isn't listed, check the serial number before ordering.
Which numbers it replaces
5021733SM replaces 5021733. 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 knob, plastic is made of plastic. The full attribute list is in the Specifications section above.

