Right Steering Spindle Bushing Kit For John Deere X100, D100, E100, S100 Series & 42" Decks | Replaces AUC10012

If your John Deere mower's steering feels sloppy or the front wheels wobble, the right spindle bushing might be worn out.
This kit is compatible with a whole slew of Deere models—think X105, X106, X107, X115, X125, X135R, X155R, D105, D110, D125, D130, E100, E110, E120, E130, S100, S110, S120, S130, and S220, all with 42-inch decks.

It's specifically the right-side steering spindle assembly, replacing part number AUC10012.

The kit includes the spindle itself, plus two caps, two washers, two bushings, and a spacer—everything you need to tighten up that front end.

The spindle stands about 7.

5 inches tall, so it matches the factory spec.
Just compare the pictures to your old part to be sure, since there are different versions out there.
Once it's in, your steering gets crisp again, and you'll stop fighting the mower on uneven ground.
Good quality aftermarket stuff that's way cheaper than a dealership trip.