ETA 870.101 – interchangeable spare parts
ETA 870.101 movement
Which spare parts fit the ETA 870.101 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
31Parts with interchange data
11Calibers 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.
🛒 Spare parts for ETA 870.101 in our shop
🔧 Interchangeable parts
| Part no. | Description | Also fits |
|---|---|---|
| 100ISO 10.020 | Main plate, jewelled | |
| 100/1ISO 10.020.06 | Main plate, jewelled, assembled | |
| 110ISO 10.048 | Train wheel bridge, jewelled | |
| 132/1ISO 81.010 | Lower bridge for oscillating weight | |
| 136ISO 10.060 | Stem cock | |
| 144ISO 10.300 | Dial fastener | |
| 161ISO 80.400 | Centre tube | |
| 203ISO 30.012 | Intermediate wheel | |
| 215ISO 30.029 | Intermediate second wheel | |
| 216ISO 30.085 | ||
| 227ISO 30.027 | Second wheel | Height 634 |
| 243ISO 31.081 | Free cannon pinion | Height 205 |
| 255 | Hour wheel | |
| 255/1ISO 31.046.06 | Hour wheel, assembled | Height 135 |
| 290ISO 31.060 | ||
| 405/3ISO 51.020 | Handsetting stem | |
| 407/1ISO 31.121.06 | Sliding pinion | |
| 435/3ISO 51.050.06 | Yoke | |
| 443/1ISO 51.080.06 | Setting lever, assembled | |
| 450/1ISO 31.100.06 | Setting wheel, assembled | |
| 466ISO 10.210 | Setting mechanism cover | |
| 2535ISO 13.105 | Date indicator guard | |
| 4000ISO 10.513 | Electronic module | |
| 4021ISO 20.582 | Stator | |
| 4022ISO 80.102 | Distance piece | |
| 4035ISO 20.760 | ||
| 4045ISO 20.653 | Insulator for power connection | |
| 4046ISO 20.651 | Battery insulator | |
| 4211ISO 20.580 | Rotor | |
| 4402ISO 20.763 | Bridle | |
| 4929/1ISO 20.570.18 | Battery |
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.

