EB 8450 – interchangeable spare parts

EB 8450 movement

Which spare parts fit the EB 8450 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

1Parts with interchange data

22Calibers 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.	Description	Also fits
401	Winding stem	according to original label EB 8423 EB 8429 EB 8430 EB 8431 EB 8461 EB 8462 EB 8463 EB 8464 EB 8465 EB 8467 EB 8480 EB 8481 EB 8482 EB 8483 EB 8485 EB 8487 EB 8490 EB 8491 EB 8492 EB 8493 EB 8495 EB 8497

Source: original interchangeability lists of EB (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 EB 8450 (height × diameter × thickness × length) and matching mainspring in our shop:

EB 8450: 1.50 × 8.0 × 0.095 × 260 mm (GR 4110-1)

🔗 Movements sharing the most parts

→ All calibers of EB

❓ Frequently asked questions

Which EB 8450 spare parts also fit other movements?

For the EB 8450, 1 part numbers are listed as interchangeable. Together they fit 22 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the EB 8450?

The most shared parts: EB 8423 (1 parts), EB 8429 (1 parts), EB 8430 (1 parts).

Which mainspring fits the EB 8450?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.50 × 8.0 × 0.095 × 260 mm (GR 4110-1, hand-wound, special version (1)).