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Felsa 523 – interchangeable spare parts
Felsa 523 movement
Which spare parts fit the Felsa 523 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
29Parts with interchange data
2Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of Felsa and the original spare-part labels. All information has been carefully checked but is provided without guarantee. Please verify the interchangeability yourself before fitting, especially the height, diameter and execution of the part.
🔧 Interchangeable parts
| Part no. | Description | Also fits |
|---|---|---|
| 182ISO 20.030 | Barrel and cover | AM 17 |
| 195ISO 20.060 | Barrel arbor | AM 17 |
| 201ISO 30.015 | Center wheel | AM 17 |
| 210ISO 30.025 | Third wheel | AM 17 |
| 224ISO 30.027.13 | Fourth wheel | AM 17 |
| 240ISO 31.080 | Cannon-pinion | Height 275 AM 17 Height 300 AM 17 |
| 250ISO 31.046 | Hour wheel | Height 170 AM 17 Height 195 AM 17 |
| 260ISO 31.041 | Minute wheel | AM 17 |
| 301ISO 40.301 | Regulator for flat hairspring | AM 17 |
| 311ISO 70.800 | Upper cap jewel with end-piece | AM 17 |
| 330ISO 70.801 | Lower cap jewel with end-piece | AM 17 |
| 336ISO 70.806 | Upper cap-jewel with end-piece, for escape wheel | AM 17 |
| 401ISO 51.010 | Winding stem | AM 17 |
| 407ISO 31.121 | Clutch wheel | AM 17 |
| 410ISO 31.120 | Winding pinion | AM 17 |
| 415ISO 31.020 | Ratchet wheel | AM 17 |
| 420ISO 31.023 | Crown wheel | AM 17 |
| 425ISO 51.120 | Click | AM 17 |
| 430ISO 61.080 | Click spring | AM 17 |
| 435ISO 51.050 | Yoke | AM 17 |
| 440ISO 61.100 | Yoke spring | AM 17 |
| 443ISO 51.080 | Setting lever | AM 17 |
| 443/5443ISO 51.080.06/.01 | Setting lever | AM 17 |
| 445ISO 51.090 | Setting lever spring | AM 520 |
| 450ISO 31.100 | Setting wheel | AM 17 |
| 453ISO 31.101 | Intermediate setting wheel | AM 17 |
| 704ISO 30.040.10 | Escape wheel and pinion, for upper end-piece | AM 17 |
| 705ISO 30.040 | Escape wheel and pinion | AM 17 |
| 710ISO 40.010 | Jewelled pallet fork and stat | AM 17 |
Source: original interchangeability lists of Felsa (checked transcription) and checked original spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.
🌀 Matching mainspring
Mainspring dimensions for Felsa 523 (height × diameter × thickness × length) and matching mainspring in our shop: