Kubota KX040-4 Track Roller – RD118-21700 / RD148-21700
OEM: RD118-21700 · RD148-21700 · Also written as: RD11821700, RD14821700 · Updated
RD118-21700 (also listed as RD148-21700) is the bottom track roller for the Kubota KX040-4 and the KX121-3 family. One part number covers two of Kubota's most common 4-ton excavators. Send your machine serial number or the number stamped on the old roller and we confirm fitment before quoting.
OEM Numbers and Fitment
| OEM part number | Brand | Fits |
|---|---|---|
| RD118-21700 | Kubota | KX040-4, KX121-3, KX121-3S, KX121-3ST |
| RD148-21700 | Kubota | KX040-4, KX121-3, KX121-3S, KX121-3ST |
What to confirm before ordering
- OEM number on the old roller or in the parts book
- Single-flange or double-flange: many machines use both
- Quantity per side: long-track (LC) machines often carry more rollers
- Machine model and serial number
Ordering
| Material and hardness | Confirmed for this part number on your quote |
|---|---|
| MOQ | 1 set per machine |
| Lead time | 7–25 days, depending on part type and quantity |
| Warranty | 12 months |
| Payment | T/T, L/C |
| Shipping port | Xiamen |
Questions About This Part
Is RD118-21700 the same as RD148-21700?
Both numbers are listed for the same bottom roller on the KX040-4 and KX121-3. Send the number on your old roller and we confirm.
Does this roller fit the KX121-2?
The KX121-2 uses different undercarriage parts. Send your serial number and we check the right roller.
Related guides
Other undercarriage parts for Kubota KX040-4
More Kubota track rollers
Full Kubota KX040-4 parts list →All Kubota track rollers →All Kubota undercarriage parts →All track rollers →