ETA 1121 – interchangeable spare parts

ETA 1121 movement

Which spare parts fit the ETA 1121 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

3Parts with interchange data

9Calibers 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

Part no.	Description	Also fits
401	Winding stem	Height 90according to original label ETA 1100 ETA 1101 ETA 1114 ETA 1120 ETA 1162 ETA 1164 ETA 1168 ETA 1292 ETA 1293
410	Winding pinion	according to original label ETA 1100 ETA 1101 ETA 1120 ETA 1168 ETA 1292 ETA 1293
445	Setting lever jumper	according to original label ETA 1120 ETA 1162 ETA 1164 ETA 1292 ETA 1293

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.