Otero 40 – interchangeable spare parts

Otero 40 movement

Which spare parts fit the Otero 40 movement? For every part you can see which other calibers use the same part according to the original Otero spare-part labels. We do not have an original interchangeability list from the manufacturer.

23Parts with interchange data

41Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original Otero spare-part labels; we do not have an original interchangeability list from the manufacturer. 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.

🛒 Spare parts for Otero 40 in our shop

Minute Work Cock Part 462 for OTERO 40, 48, 140, 70, 72, 78, 79K, 782, 84412,95 € incl. VAT *View item ›

Yoke Spring Part 440 for OTERO 40, 41, 70, 48, 77, 64, 140, 48112,95 € incl. VAT *View item ›

Crown Wheel Rings for OTERO 37, 365, 40, 78, 58 – Part 422 (2 pcs)9,90 € incl. VAT *View item ›

Regulator for OTERO 25, 156, 37, 39, 40, 44, 46, 70, 792, 441 – Part 30111,95 € incl. VAT *View item ›

Clutch Wheel Part 407 for OTERO 37, 39, 58, 40, 41, 45, 56, 62, 16212,95 € incl. VAT *View item ›

Minute Wheel Part 260 for OTERO 25, 27, 56, 37, 39, 1371, 40, 140, 401, 44112,95 € incl. VAT *View item ›

More items for Otero 40 in our shop →

🔧 Interchangeable parts

Part no.	Description	Also fits
180	barrel with arbor	Otero 41 Otero 48 Otero 140 Otero 141 Otero 401 Otero 411 Otero 412 Otero 481
195/5415	Barrel arbor	Otero 41 Otero 140 Otero 141 Otero 401 Otero 411 Otero 412 Otero 1412
206	center wheel	Otero 41 Otero 44 Otero 45 Otero 48 Otero 401 Otero 411 Otero 412 Otero 441 Otero 481 Otero 482
227	Sweep second wheel	Height 6,15 Otero 41 Otero 44 Otero 45 Otero 48 Otero 140
260	Minute wheel	Otero 41 Otero 44 Otero 45 Otero 48 Otero 140 Otero 144 Otero 401 Otero 412 Otero 441
301	Regulator for flat hairspring	Otero 41 Otero 44 Otero 45 Otero 48 Otero 140 Otero 141 Otero 411 Otero 412 Otero 441
407	clutch wheel	Otero 41 Otero 45 Otero 48 Otero 140 Otero 141 Otero 401 Otero 411 Otero 412 Otero 481
410	Winding pinion	Otero 41 Otero 401 Otero 412
415	ratchet	Otero 41 Otero 401 Otero 412
420	crown wheel	Otero 41 Otero 401 Otero 412
422	Crown wheel ring	Otero 41 Otero 140 Otero 141 Otero 401 Otero 411 Otero 412 Otero 1412
425	click	Otero 41 Otero 45 Otero 140 Otero 141 Otero 401 Otero 411 Otero 412 Otero 1412
430	Click spring	Otero 41 Otero 45 Otero 64 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 712 Otero 722 Otero 740 Otero 742
435	clutch lever	Otero 41 Otero 48 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 77 Otero 78 Otero 79 Otero 401 Otero 412 Otero 481
440	Yoke spring	Otero 41 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 140 Otero 141
443+5443	Setting lever with screw	Otero 41 Otero 48 Otero 140 Otero 141
445	Art.Nr. 445“	Otero 41 Otero 48 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 712 Otero 722 Otero 740 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 840 Otero 844 Otero 904 Otero 41 Otero 48 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 77 Otero 78 Otero 79 Otero 401 Otero 412 Otero 481
462	Minute work cock	Otero 41 Otero 48 Otero 140 Otero 141
702	escape wheel	Otero 41 Otero 45 Otero 48 Otero 140 Otero 141 Otero 401 Otero 411 Otero 412 Otero 481
705	escape wheel	Otero 41 Otero 44 Otero 45 Otero 48 Otero 140 Otero 144 Otero 401 Otero 412 Otero 441
710	Jewelled pallet fork and stat	Otero 37 Otero 39 Otero 41 Otero 44 Otero 45 Otero 48 Otero 58 Otero 371 Otero 391 Otero 401
721	Balance with flat hairspring, regulated	Otero 41 Otero 140 Otero 141 Otero 401
721/1	balance	Otero 41 Otero 44 Otero 45

Source: checked original Otero spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for Otero 40 (height × diameter × thickness × length) and matching mainspring in our shop:

Otero 40: 1.40 × 8.5 × 0.09 × 300 mm (GR 3629)

🔗 Movements sharing the most parts

→ All calibers of Otero

❓ Frequently asked questions

Which Otero 40 spare parts also fit other movements?

For the Otero 40, 23 part numbers are listed as interchangeable. Together they fit 41 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the Otero 40?

The most shared parts: Otero 41 (24 parts), Otero 401 (16 parts), Otero 412 (15 parts).

Which mainspring fits the Otero 40?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.40 × 8.5 × 0.09 × 300 mm (GR 3629, hand-wound, normal end hook).