Felsa 800 – interchangeable spare parts

Felsa 800 movement

Which spare parts fit the Felsa 800 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

3Parts with interchange data

54Calibers 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
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 781 Felsa 781N Felsa 782 Felsa 782N 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 781 Felsa 781N Felsa 782 Felsa 782N Felsa 790 Felsa 792 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
710ISO 40.010	Jewelled pallet fork and stat	FEF 250 Peseux 250

Source: original interchangeability lists of Felsa (checked transcription) and checked original spare-part labels · as of 2026-10-28. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for Felsa 800 (height × diameter × thickness × length) and matching mainspring in our shop:

Felsa 800: 1.80 × 7.0 × 0.07 × 260 mm (GR 5197)

🔗 Movements sharing the most parts

→ All calibers of Felsa

❓ Frequently asked questions

Which Felsa 800 spare parts also fit other movements?

For the Felsa 800, 3 part numbers are listed as interchangeable. Together they fit 54 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the Felsa 800?

The most shared parts: Felsa 720 (2 parts), Felsa 720N (2 parts), Felsa 721 (2 parts).

Which mainspring fits the Felsa 800?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.80 × 7.0 × 0.07 × 260 mm (GR 5197, hand-wound, normal end hook).