ETA 251.251 – interchangeable spare parts

ETA 251.251 movement

Which spare parts fit the ETA 251.251 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

45Parts with interchange data
122Calibers 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 251.251 in our shop

🔧 Interchangeable parts

Part no.DescriptionAlso fits
100ISO 10.020Main plate, jewelled
110ISO 10.048Train wheel bridge, jewelled
144ISO 10.300Dial fastener
161ISO 80.400Centre tube
203ISO 30.012Intermediate wheel
204ISO 30.031Additional intermediate wheel
210ISO 30.025Third wheel
224ISO 30.027.13Second wheel
242ISO 31.083Cannon pinion with driving wheel
255/1ISO 31.046.06Hour wheel, assembled
260ISO 31.041Minute wheel
405/3ISO 51.020Handsetting stem
407/1ISO 31.121.06Sliding pinion
435/3ISO 51.050.06Yoke
443/1ISO 51.080.06Setting lever, assembled
445/2ISO 51.091Combined setting lever jumper
450/1ISO 31.100.06Setting wheel, assembled
453ISO 31.101Intermediate setting wheel
453/1ISO 31.101.18Intermediate setting wheel, with special toothing
560ISO 56.071Stop lever and switch
4012ISO 20.552Additional printed circuit
4017ISO 80.204Circuit distance piece
4021ISO 20.582Stator
4021¹ISO 20.582.20Additional stator
4038ISO 20.584Electronic module cover
4060ISO 20.590Coil
4211ISO 20.580Rotor
4400ISO 51.600Battery clamp
4401ISO 20.761Bridle +
4412ISO 10.601Battery limiting spring
4414ISO 61.530Contact spring for push-button
4414¹ISO 61.530.18Contact spring for push-button
4820/1ISO 56.520.18Connector for printed circuit
4929/1ISO 20.570.18Battery
8020ISO 35.012Chronograph wheel, 60 s, 30 min.
8027ISO 35.011Counting wheel for seconds or minutes
8056ISO 86.441Minute counting wheel tube
8059ISO 35.016Driving wheel for second counter
8062ISO 35.013Minute counter driving wheel, 30 min.
8500ISO 15.040.07Chronograph bridge, jewelled
8502ISO 15.042.07Minute / 1/10 second counting wheel bridge, jewelled
8600ISO 35.030Hour counting wheel
8608ISO 85.440Hour counting wheel tube
8620ISO 15.044.07Hour / minute counting wheel bridge, jewelled
8630/1ISO 35.031Hour counter driving 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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