Kubota KX 121-3 Drive Sprocket

SKU: RD118-14433
Weight: 30 lbs

Buy Kubota KX 121-3 replacement drive sprockets online individually but inspect your entire undercarriage and consider replacing the rubber track and sprocket at the same time to maximize the lifespan of the undercarriage and minimize premature wearing.

Price: $129.00
Kubota KX 121-3 Sprockets RD118-14433
Kubota KX 121-3 Drive Sprocket
Product Details

This is the replacement aftermarket steel drive sprocket for the Kubota KX 121-3 mini excavator. This is a direct replacement drive sprocket reusing your factory bolts. We suggest changing your sprockets and rubber tracks together for more even wear and increased savings.

Sprocket Specifications:

  • 23 Teeth
  • 9 Bolt Holes
  • Inside Diameter: 8 Inches
  • Outside Diameter: 14 7/8 Inches
  • Width at Base of Tooth: 1 1/2 Inches


Alternate Part Number: Kubota dealer part number: RD118-14433
Alternate Model:
The RD118-14433 drive sprocket is known to fit the Kubota KX 121-3 models in addition to the KX040-4. There is an optional drive sprocket for certain serial numbers so please verify your diameter prior to ordering online.
Alternate Part:
There are no known alternate part listings for the KX 121-3 mini excavator, this sprocket is guaranteed to fit.

Kubota KX121-3 Undercarriage Parts

Here is the complete line of undercarriage parts for the Kubota KX 121-3 including the rubber track, drive sprocket, bottom rollers, top rollers, and tension idler.

Kubota 121-3 Sprocket RD118-14433 Kubota Top Carrier Roller RD411-22900Kubota Bottom Roller RD118-21700 Kubota Tension Ider RD118-21300

All manufacturers, names, symbols and descriptions are used for customer reference needs only, and it is not implied that any parts or rubber tracks are original products of the manufacturer. All wear parts offered on the website are aftermarket products but are backed by a warranty.