EB 8397-66 – interchangeable spare parts

EB 8397-66 movement

Which spare parts fit the EB 8397-66 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

39Parts with interchange data
72Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of EB 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.DescriptionAlso fits
163/1ISO 80.400Center pipe
181/1ISO 20.040.06Barrel for drilled core with driving wheel / driving pinion
197ISO 20.070.06Core and ratchet wheel, riveted
199ISO 20.062Barrel axle
203ISO 30.012Intermediate wheel and pinion
210ISO 30.025Third wheel
227ISO 30.027Sweep second wheel
243ISO 31.081Cannon pinion without clam notch
260ISO 31.041Minute wheel
307ISO 40.301Regulator with adjustable stud holder, for flat hairspring
311ISO 70.800Upper cap jewel with end-piece
330ISO 70.801Lower cap jewel with end-piece
401ISO 51.010Winding stem
407ISO 31.121Clutch wheel
410ISO 31.120Winding pinion
420ISO 31.023Crown wheel
425ISO 51.120Click
430ISO 61.080Click spring
435/1ISO 51.050Spring yoke
443/1ISO 51.080.06Setting lever, assembled
450ISO 31.100Setting wheel
790ISO 30.041Pin escape wheel, pivoted
792ISO 41.101.41Balance staff for roller
793ISO 40.054Balance with roller, regulated
794ISO 40.055Balance with finger, regulated
799/4ISO 40.123Small roller
821/792ISO 40.101.26Balance staff for roller and for shock-protecting device
2535ISO 13.105 (13.104Date indicator guard
2557/1ISO 91.440Date indicator, transferred
2558ISO 33.010Double-toothing hour wheel
2561/1ISO 91.441Day indicator, for horizontal rectangular window opening at 3 o'clock
2575ISO 63.020Date jumper spring
2576ISO 53.080Date jumper, mounted
2621ISO 33.029 (33.030
2628ISO 53.140
2632ISO 53.040
2633ISO 63.012Unlocking yoke spring for date indicator
2730ISO 53.111
2731ISO 63.051

Source: original interchangeability lists of EB (checked transcription) and checked original spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.

🔗 Movements sharing the most parts

→ All calibers of EB

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