ETA 556.121 – interchangeable spare parts
ETA 556.121 movement
Which spare parts fit the ETA 556.121 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
🔧 Interchangeable parts
Source: original interchangeability lists of ETA (checked transcription) and checked original spare-part labels · as of 2026-10-28. Height / execution: the part fits only in this height or execution.
🔗 Movements sharing the most parts
- ETA 555.121 (31 parts)
- ETA 555.421 (31 parts)
- ETA 556.125 (30 parts)
- ETA 956.121 (30 parts)
- ETA 956.124 (30 parts)
- ETA 556.111 (29 parts)
- ETA 956.122 (29 parts)
- ETA 556.119 (28 parts)
- ETA 956.119 (27 parts)
- ETA 956.421 (25 parts)
- ETA 556.031 (24 parts)
- ETA 555.122 (23 parts)
- ETA 555.125 (23 parts)
- ETA 555.419 (23 parts)
- ETA 555.422 (23 parts)
- ETA 555.425 (23 parts)
❓ Frequently asked questions
Which ETA 556.121 spare parts also fit other movements?
For the ETA 556.121, 41 part numbers are listed as interchangeable. Together they fit 121 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the ETA 556.121?
The most shared parts: ETA 555.121 (31 parts), ETA 555.421 (31 parts), ETA 556.125 (30 parts).
🛠️ For the workshop
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