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Restoring an American Flyer S gauge steamer?
This is the motor spring you need.
Part PA10757.
Four springs in the pack?
The listing says 4—maybe multiple or just a listing quirk.

But it's the correct spring for S gauge steam engines from the postwar era (1945-1969).
Scale is 1:64.

Made in USA.
Graded C-9 Factory New—basically mint, brand old stock or new manufacture repro.
Brand is American Flyer, MPN just says American Flyer Parts.

UPC not applicable.

Gauge is S, not O, not HO.
If your locomotive winds slack or the motor won't tension, this spring fixes it.

Small part, huge difference.
Combined shipping discount if you use the cart.
Keep those old Flyers chugging.

4.5 out of 5