Felsa 4045 – interchangeable spare parts

Felsa 4045 movement

Which spare parts fit the Felsa 4045 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

3Parts 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
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 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 4057
336ISO 70.806	Upper cap-jewel with end-piece, for escape wheel	Felsa 415 Felsa 465 Felsa 465N Felsa 472 Felsa 690 Felsa 692 Felsa 692N Felsa 693 Felsa 694 Felsa 695 Felsa 699 Felsa 700 Felsa 700N Felsa 702 Felsa 705 Felsa 705N Felsa 760 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 4031 Felsa 4032 Felsa 4033 Felsa 4034
346ISO 70.807	Lower cap jewel with end-piece, f. esc. wheel	Felsa 700 Felsa 700N Felsa 705 Felsa 705N

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 4045 (height × diameter × thickness × length) and matching mainspring in our shop:

Felsa 4045: 1.45 × 7.0 × 0.085 × 240 mm (GR 3930)

🔗 Movements sharing the most parts

→ All calibers of Felsa

❓ Frequently asked questions

Which Felsa 4045 spare parts also fit other movements?

For the Felsa 4045, 3 part numbers are listed as interchangeable. Together they fit 59 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the Felsa 4045?

The most shared parts: Felsa 415 (2 parts), Felsa 690 (2 parts), Felsa 692 (2 parts).

Which mainspring fits the Felsa 4045?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.45 × 7.0 × 0.085 × 240 mm (GR 3930, hand-wound, normal end hook).