Otero 840 – interchangeable spare parts

Otero 840 movement

Which spare parts fit the Otero 840 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.

17Parts with interchange data

45Calibers 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 840 in our shop

Otero 840 Incomplete Watch Movement as Parts Donor29,00 € incl. VAT *View item ›

Crown Wheel Rings for OTERO 437, 840, 844, 904 – Part 42212,90 € incl. VAT *View item ›

Ratchet Wheel Part 415 for OTERO 70, 25, 72, 73, 844, 840, 904, 44, 4612,90 € incl. VAT *View item ›

Clutch Wheel Part 407 for OTERO 70, 280, 840, 844, 790, 796, 90412,90 € – 12,95 € incl. VAT *View item ›

Barrel Arbor Part 195 for OTERO 236, 237, 336, 337, 840, 84411,95 € – 13,95 € incl. VAT *View item ›

Balance Cock Part 121 for OTERO 74, 742, 236, 237, 336, 840, 26212,95 € – 14,90 € incl. VAT *View item ›

More items for Otero 840 in our shop →

🔧 Interchangeable parts

Part no.	Description	Also fits
180	barrel with arbor	Otero 844 Otero 846
195	barrel arbor	Otero 844
195/5415	Barrel arbor	Otero 844
227	Sweep second wheel	Height 5,13 Otero 740
307/1	regulator	Otero 72 Otero 73 Otero 74 Otero 77 Otero 79 Otero 79K Otero 722 Otero 740 Otero 742 Otero 744 Otero 772 Otero 796 Otero 844 Otero 846
364	Stud holder	Otero 72 Otero 73 Otero 74 Otero 77 Otero 79 Otero 79K Otero 722 Otero 740 Otero 742 Otero 744 Otero 772 Otero 796 Otero 844 Otero 846
401	Winding stem	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 79 Otero 79K Otero 712 Otero 722 Otero 740 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 795 Otero 796 Otero 844 Otero 846 Otero 904
407	clutch wheel	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 79 Otero 79K Otero 712 Otero 722 Otero 740 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 795 Otero 796 Otero 844 Otero 846 Otero 904 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 77 Otero 78 Otero 79 Otero 177 Otero 712 Otero 782 Otero 792 Otero 844 Otero 1772
410	Winding pinion	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 79 Otero 79K Otero 712 Otero 722 Otero 740 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 795 Otero 796 Otero 844 Otero 846 Otero 904
415	ratchet	Otero 800 Otero 844 Otero 846
420	crown wheel	Otero 844 Otero 846
422	Crown wheel ring	Otero 844
445	Art.Nr. 445“	Otero 40 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 844 Otero 904
705	escape wheel	Otero 740 Otero 744 Otero 844 Otero 846 Otero 904
710	Jewelled pallet fork and stat	Otero 25 Otero 27 Otero 46 Otero 56 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 79 Otero 79K Otero 790 Otero 792 Otero 794 Otero 795 Otero 796 Otero 797 Otero 800 Otero 801 Otero 844 Otero 845 Otero 846 Otero 847 Otero 901 Otero 904
721/1	balance	Otero 740 Otero 744 Otero 790 Otero 794 Otero 796 Otero 844 Otero 846 Otero 904
5420	Crown wheel screw	Otero 236 Otero 237 Otero 335 Otero 336 Otero 844 Otero 846

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

🔗 Movements sharing the most parts

→ All calibers of Otero

❓ Frequently asked questions

Which Otero 840 spare parts also fit other movements?

For the Otero 840, 17 part numbers are listed as interchangeable. Together they fit 45 other calibers – the table below shows which part fits which movement.