4100383 EFCO Key Replaced By 4100383A

4100383 EFCO Key Replaced By 4100383A

Part number:4100383A
SKU Number:EFC-4100383A
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.

Efco 4100383 Repair Part

When a worn component starts to drag performance down, 4100383 EFCO Key Replaced By 4100383A is a practical fix that restores confidence in your setup. With a replacement that aligns to original-style specs, you spend less time fighting the install and more time using your gear.


When downtime is expensive, having the right part on hand makes maintenance faster and more predictable. It helps you keep your workflow moving without committing to a costly replacement. Verify compatibility with your model before ordering, then install with standard tools and get back to work with confidence.

Fits Models

This part fits 2 models:

EFCO 410 Trimmer

EFCO 410 Trimmer

View Model
EFCO 310 Trimmer

EFCO 310 Trimmer

View Model
Customer Reviews (1)
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Jason R.
16 Mar, 2025

Excellent replacement part. The 4100383 Efco Key Replaced By 4100383A fit perfectly and restored smooth, reliable operation. Shipping was fast and ordering was easy.