Felsa 726 – interchangeable spare parts

Felsa 726 movement

Which spare parts fit the Felsa 726 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

1Parts with interchange data

4Calibers 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
445	Setting lever spring	according to original label Felsa 720 Felsa 720N Felsa 721 Felsa 722

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 726 (height × diameter × thickness × length) and matching mainspring in our shop:

Felsa 726: 1.40 × 7.0 × 0.075 × 260 mm (GR 3591)

🔗 Movements sharing the most parts

→ All calibers of Felsa

❓ Frequently asked questions

Which Felsa 726 spare parts also fit other movements?

For the Felsa 726, 1 part numbers are listed as interchangeable. Together they fit 4 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the Felsa 726?

The most shared parts: Felsa 720 (1 parts), Felsa 720N (1 parts), Felsa 721 (1 parts).

Which mainspring fits the Felsa 726?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.40 × 7.0 × 0.075 × 260 mm (GR 3591, hand-wound, normal end hook).