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2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 1 | Northline Parts
  • 2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 1 | Northline Parts
  • 2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 2 | Northline Parts
  • 2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 3 | Northline Parts
  • 2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 4 | Northline Parts
  • 2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 5 | Northline Parts
  • 2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 6 | Northline Parts
  • 2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4 - product image 7 | Northline Parts
2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4

2 Bottom Track Rollers RD118-21700 for Kubota KX121-3 KX040-4 KX042-4

SKU: NLT2T02362
$349.89 In Stock
$349.89
$349.89
Ships for free in 2–4 business days.
Renew two worn lower undercarriage rollers on a compatible Kubota excavator with this pair referenced to RD118-21700.
Estimated delivery between
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • Kubota KX121-3
  • KX121-3S
  • KX040-4 and KX042-4 excavators

Product Overview

Lower rollers carry the machine weight while the track travels around the undercarriage. Worn bearings, damaged flanges or leaking seals can contribute to uneven track movement and accelerated undercarriage wear.

Key Features & Performance

  • Designed for the specific part and equipment applications described below; confirm the original component before ordering.
  • Replacement purpose: Grinding, roller wobble, flat spots, seal leakage or visible roller damage.

OE / Reference Numbers

  • RD118-21700

Common Reasons for Replacement

Grinding, roller wobble, flat spots, seal leakage or visible roller damage.

Fitment & Installation Notes

Check roller dimensions, mounting bolt pattern and track-frame arrangement; order quantity is two.

Frequently Asked Questions

How can I confirm this is the right part? Check roller dimensions, mounting bolt pattern and track-frame arrangement; order quantity is two.

Is this an OEM part? This listing is for an aftermarket replacement unless specifically marked genuine OEM. Original manufacturer names and reference numbers are supplied for identification.

Part Summary

keywords: 2 bottom track rollers rd118-21700, Kubota KX121-3, RD118-21700, heavy machinery parts & accessories

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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