ETA 2503 – interchangeable spare parts
ETA 2503 movement
Which spare parts fit the ETA 2503 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
39Parts with interchange data
144Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of ETA 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
Source: original interchangeability lists of ETA (checked transcription) and checked original spare-part labels · as of 2026-10-18. Height / execution: the part fits only in this height or execution.
🌀 Matching mainspring
Mainspring dimensions for ETA 2503 (height × diameter × thickness × length) and matching mainspring in our shop:
🔗 Movements sharing the most parts
- ETA 2502 (68 parts)
- ETA 2516 (64 parts)
- ETA 2500 (59 parts)
- ETA 2522 (56 parts)
- ETA 2522R (55 parts)
- ETA 2532 (52 parts)
- ETA 2532R (52 parts)
- ETA 2520 (49 parts)
- ETA 2520R (49 parts)
- ETA 2538 (36 parts)
- ETA 2538R (36 parts)
- ETA 2539 (36 parts)
- ETA 2539R (36 parts)
- ETA 2600 (19 parts)
- ETA 2602 (19 parts)
- ETA 2612 (18 parts)