ETA 963.121 – interchangeable spare parts

ETA 963.121 movement

Which spare parts fit the ETA 963.121 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

43Parts with interchange data
39Calibers 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 963.121 in our shop

🔧 Interchangeable parts

Part no.DescriptionAlso fits
100ISO 10.020Main plate, jewelled
110ISO 10.048Train wheel bridge, jewelled
144ISO 10.300Dial fastener
145ISO 10.106Dial support
161ISO 80.400Centre tube
210ISO 30.025Third wheel
215ISO 30.029Intermediate second wheel
227ISO 30.027Second wheel
Height 537
Height 562
242ISO 31.083Cannon pinion with driver
255/1ISO 31.046.06Hour wheel, assembled
260ISO 31.041Minute wheel
405Handsetting stem, thread diameter S. 1,00 mm
405/3ISO 51.020Handsetting stem, thread diameter S. 1,00 mm
405/4Handsetting stem, movement part with beak
407/1ISO 31.121.06Sliding pinion
435/3ISO 51.050.06Yoke
443Setting lever
443/1ISO 51.080.06Setting lever, assembled
450/1ISO 31.100.06Setting wheel, assembled
479/1ISO 61.090.06Pressure spring for setting lever, assembled
2521ISO 33.081Day corrector setting wheel
2526ISO 33.080
2543ISO 33.011Intermediate date wheel
2555ISO 33.028Calendar driving wheel
2557/1ISO 91.440Date indicator, for window opening at 3 o'clock
2561/1ISO 91.441Day indicator, for horizontal rectangular opening at 3 o'clock
2566ISO 53.200Date corrector
2567ISO 53.201Day corrector
2576ISO 53.080Date jumper
2577ISO 53.081Day jumper
2632ISO 53.040Date unlocking yoke
2740/1ISO 13.101.06Calendar mechanism maintaining plate
2744/1ISO 33.101.06Pinion of date corrector, assembled
2780ISO 83.171Day indicator spring-clip
4000ISO 10.513Electronic module
4021ISO 20.582Stator
4038ISO 20.584Magnetic screen, upper
4060ISO 20.590Coil
4211ISO 20.580Rotor
4402/1ISO 20.763.18Bridle –, assembled with screw and insulator
4929/1ISO 20.570.18Battery
9433ISO 56.070Stop lever
9711ISO 36.052Corrector intermediate setting wheel

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.

🔗 Movements sharing the most parts

→ All calibers of ETA

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