ST38121 Spring Governor

ST38121 Spring Governor

Part number:ST38121
SKU Number:STN-ST38121
Warranty:1 Year

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 ST38121 Spring Governor Repair Part

If your machine isn’t running the way it should, replacing a worn component with ST38121 Spring Governor can help bring performance back quickly. Swapping the failing component early can help protect nearby parts and keep overall performance steady.


Repairing instead of replacing the whole machine is often the most cost-effective path especially when the rest of your equipment is still in good shape. It’s an efficient fix that keeps your machine earning its keep. Confirm compatibility with your model before ordering, then install with standard tools and get back to work with confidence.

Customer Reviews (2)
5 out of 5
2 reviews
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Haley Y.
08 Sep, 2025

Very high-quality part. The St38121 Spring Governor arrived well packaged and performed just like the original.

Isaac J.
11 Apr, 2025

Well-made and easy to install.