Title:
SPRING ASSEMBLY (KU-RB51121403)
Description:
The Spring Assembly (RB511-21403) is a genuine OEM spring component designed to apply tension and return force in a mechanical assembly on Kubota machines. Spring assemblies like this are typically used in control linkages, levers, or mechanical pivot points where consistent spring force is needed for smooth operation and reliability.
This part is built to Kubota factory standards for strength and durability in construction environments.
Model Fitment:
U20-3a / U203A
U25-3a / U253A / U25S
U27-4
Part Details:
| Part Name – |
Spring Assembly |
| OEM Part Number – |
RB511-21403 |
| Brand – |
Kubota (Genuine OEM) |
| Component Type – |
Tension spring / spring assembly |
| Primary Function – |
Provides tension and return force in a mechanical linkage or assembly |
| Typical Fitment – |
Kubota compact excavators (U20-3a, U25-3a, U25S, U27-4) |
| Material – |
High-strength spring steel |
| Installation – |
Direct OEM replacement in specified linkage or bracket |
| Benefits – |
Restores proper tension/return action, prevents sagging or slack |
| Signs It Needs Replacement – |
Poor linkage return, loss of tension, broken or worn spring |
