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Kubota KX 121-3 Drive Sprocket RD118-14433

Kubota KX 121-3 Sprockets RD118-14433
Rubbertrax
Kubota KX 121-3 Drive Sprocket RD118-14433
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. Save online and skip the trip to the dealer. This sprocket ships free when you check out online.
SKU: RD118-14433
Weight: 34 lbs
Make: Kubota
Shipping: Fast and Free!
Price: $221.00

Rubber tracks and wear parts are sold individually unless specified in the details. We offer free shipping across the USA when you order online and ship to a commercial address. *Some restrictions apply.

RD118-14433 Sprocket Specifications:

This is the replacement aftermarket steel drive sprocket for the Kubota KX 121-3, KX 121-3SS, and KX 121-3ST mini excavators. 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.


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

This is a direct replacement drive sprocket reusing your factory bolts. The factory suggests hand tightening to the torque specifications of your original sprocket and not over-tension with an impact that could potentially over-tighten or damage the sprocket.


We do offer rubber track and sprocket combination packages for increased savings, so please call for details if you have any questions.


Alternate Part Numbers

  • Kubota Dealer Part Number: RD118-14433, RD118-14431, RD118-14430, 68658-14430

Alternate Models

This sprocket (RD118-14433) is known to fit:

  • Kubota KX 121-3
  • Kubota KX 121-3SS
  • Kubota KX 121-3ST
  • Kubota KX 040-4 (Specific Serials)

Sprocket Hardness

Smaller sprockets for mini track loaders and mini excavators are hardened in a one step procedure via electrical induction. This increases the depth of the hardness through the teeth while preventing breakage. Our aftermarket sprockets are hardened within millimeters of the original OEM sprocket which provides a great value for our customers overall.

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.