Replaces OEM Part Numbers:

Ferris 5100993
Simplicity / Allis Cha 5100993SM
Snapper / Kees 5100993SM

Ferris, Snapper, & Simplicity spindle part number 5100993 and 5100993SM complete assembly

Cast Iron Spindle For Snapper Pro Mowers and Ferris IS2500Z

Also fits its Mini Hercules ATR zero-turn mowers and F150XT series with 52" decks, along with additional Snapper Pro models listed below.
 
Spindle Fits S150XT, S175X, S200X, & S200XT Snapper Lawn Mowers 

Fits:
Models with 52" and 61" decks -
S150XT - 52" only
S175X - 61" only
S200X - 61" with Serial Number 2012617339 and above
S200XT - 61"