Felsa 781 – interchangeable spare parts

Felsa 781 movement

Which spare parts fit the Felsa 781 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

32Parts with interchange data

59Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of Felsa 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
182ISO 20.030	Barrel and cover	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
195ISO 20.060	Barrel arbor	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
206ISO 30.015	Center wheel	Felsa 700 Felsa 700N Felsa 702 Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
211ISO 30.025	Double third wheel	Felsa 700 Felsa 700N Felsa 702 Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
220ISO 30.027	Fourth wheel	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
245ISO 31.080	Cannon pinion with clam notch	Felsa 700 Felsa 700N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 177 Felsa 700 Felsa 700N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 201 Felsa 700 Felsa 700N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 226 Felsa 700 Felsa 700N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 241 Felsa 700 Felsa 700N Felsa 702 Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
255ISO 31.046	Hour wheel	Felsa 700 Felsa 700N Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 105 Felsa 700 Felsa 700N Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 130 Felsa 700 Felsa 700N Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 155 Felsa 700 Felsa 700N Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058 Height 170 Felsa 700 Felsa 700N Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
260ISO 31.041	Minute wheel	Felsa 700 Felsa 700N Felsa 702 Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057
301ISO 40.301	Regulator for flat hairspring	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
311ISO 70.800	Upper cap jewel with end-piece	Felsa 302 Felsa 350 Felsa 351 Felsa 352 Felsa 720 Felsa 720N Felsa 721 Felsa 722 Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 800 Felsa 4057 Felsa 4058
330ISO 70.801	Lower cap jewel with end-piece	Felsa 383 Felsa 384 Felsa 415 Felsa 690 Felsa 692 Felsa 692N Felsa 693 Felsa 694 Felsa 695 Felsa 699 Felsa 720 Felsa 720N Felsa 721 Felsa 722 Felsa 760 Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 790 Felsa 792 Felsa 800 Felsa 1560 Felsa 4000 Felsa 4000N Felsa 4002 Felsa 4004 Felsa 4005 Felsa 4005N Felsa 4006N Felsa 4007 Felsa 4007N Felsa 4008 Felsa 4009 Felsa 4010 Felsa 4010N Felsa 4012 Felsa 4014 Felsa 4015 Felsa 4015N Felsa 4017 Felsa 4017N Felsa 4018 Felsa 4019 Felsa 4045 Felsa 4057
336ISO 70.806	Upper cap-jewel with end-piece, for escape wheel	Felsa 720 Felsa 720N Felsa 721 Felsa 722 Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
346ISO 70.807	Lower cap jewel with end-piece, f. esc. wheel	Felsa 302 Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057
401ISO 51.010	Winding stem	Felsa 700 Felsa 700N Felsa 702 Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
407ISO 31.121	Clutch wheel	Felsa 700 Felsa 700N Felsa 702 Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
410ISO 31.120	Winding pinion	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
415ISO 31.020	Ratchet wheel	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
420ISO 31.023	Crown wheel	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
422ISO 81.067	Crown wheel ring	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N
425ISO 51.120	Click	Felsa 780 2e Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
430ISO 61.080	Click spring	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
435ISO 51.050	Yoke	Felsa 700 Felsa 700N Felsa 702 Felsa 705 Felsa 705N Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
440ISO 61.100	Yoke spring	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
443ISO 51.080	Setting lever	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
443/5443ISO 51.080.06/.01	Setting lever	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
445ISO 51.090	Setting lever spring	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N according to original label Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 783
450ISO 31.100	Setting wheel	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
462ISO 10.062	Minute work cock	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057
702ISO 30.040.12	Escape wheel and pinion, pivoted, for two end-pieces	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057
704ISO 30.040.10	Escape wheel and pinion, for upper end-piece	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4058
705ISO 30.040	Escape wheel and pinion	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Felsa 4058
710ISO 40.010	Jewelled pallet fork and stat	Felsa 780 Felsa 780N Felsa 781N Felsa 782 Felsa 782N Felsa 4057 Peseux 220

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