ST50991 Spring Extension Control Pump

ST50991 Spring Extension Control Pump

Part number:ST50991
SKU Number:STN-ST50991
Warranty:1 Year
Fits Models:View Models List

Discontinued

There is no available substitute by the factory. This part is no longer supported. Sorry, we cannot help.
There is no known alternate available. We have no part available to offer you as a replacement.

Stone Toro ST50991 Spring Extension Control Pump Repair Part

When a tired part starts to affect results, ST50991 Spring Extension Control Pump is a practical replacement that helps restore confidence in your equipment. With a proper fit approach, you spend less time troubleshooting and more time getting work done.


When time matters, having the correct replacement on hand makes maintenance faster and helps avoid unexpected downtime. It’s an efficient fix that keeps your machine earning its keep. Verify fitment first, then enjoy a straightforward swap that helps restore performance and peace of mind.

Fits Models

This part fits 3 models:

Stone SB2100 Mud Buggy Parts

Stone SB2100 Mud Buggy Parts

View Model
Stone SB1600 Mud Buggy Parts

Stone SB1600 Mud Buggy Parts

View Model
Stone FB1000 Mud Buggy Parts

Stone FB1000 Mud Buggy Parts

View Model
Customer Reviews (2)
5 out of 5
2 reviews
5 stars
50%
4 stars
50%
3 stars
0%
2 stars
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1 stars
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Easy to use
Durability
Value for money
Share your thoughts
Amanda Q.
28 Jul, 2025

Matched the original part number. Worked flawlessly.

Rachel K.
25 Apr, 2025

Good quality and correct fit for STN-ST50991. The St50991 Spring Extension Control Pump installed smoothly and fixed the issue. I just took a little extra time to confirm compatibility.