ETA 2778 – interchangeable spare parts
ETA 2778 movement
Which spare parts fit the ETA 2778 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
🛒 Spare parts for ETA 2778 in our shop
ETA 2750 - 2791 PART 195, Barrel arbor 2774, 2776 2778, 2781 ETA 2783, 2784 278813,99 € incl. VAT *View item ›
Winding Stem for ETA 2750/2752/2758/2762/2768/2770/2771/2772/2773/2774/2776/2778/2782/27889,95 € incl. VAT *View item ›
Ratchet Wheel for ETA 2770, 2772, 2778, 2788, 2789 – Part 415 – NOS11,95 € incl. VAT *View item ›🔧 Interchangeable parts
Source: original interchangeability lists of ETA (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 ETA 2778 (height × diameter × thickness × length) and matching mainspring in our shop:
🔗 Movements sharing the most parts
- ETA 2788 (60 parts)
- ETA 2772 (59 parts)
- ETA 2773 (57 parts)
- ETA 2770 (56 parts)
- ETA 2776 (54 parts)
- ETA 2789 (54 parts)
- ETA 2781 (52 parts)
- ETA 2782 (52 parts)
- ETA 2758 (52 parts)
- ETA 2774 (51 parts)
- ETA 2790 (49 parts)
- ETA 2783 (48 parts)
- ETA 2768 (47 parts)
- ETA 2771 (47 parts)
- ETA 2791 (46 parts)
- ETA 2752 (44 parts)
❓ Frequently asked questions
Which ETA 2778 spare parts also fit other movements?
For the ETA 2778, 50 part numbers are listed as interchangeable. Together they fit 120 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the ETA 2778?
The most shared parts: ETA 2788 (60 parts), ETA 2772 (59 parts), ETA 2773 (57 parts).
Which mainspring fits the ETA 2778?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.45 × 11.0 × 0.125 × 400 mm (GR 4006-X, automatic, with welded slipping bridle).
Can I buy spare parts for the ETA 2778?
Yes, Master Watch Parts currently has 3 matching items in stock.
🛠️ For the workshop
Luminous Compound DIY Set for Watch Hands and Dials – Non-Radioactive – New12,90 € – 29,90 € incl. VAT *View item ›
Domed Sapphire Watch Crystal, 1.0 mm, Ø 16-40 mm – Replacement, New31,90 € – 44,90 € incl. VAT *View item ›
High-Domed Watch Crystal Sternkreuz HW, Flume, for Wrist and Pocket Watches, 12-40 mm5,95 € – 10,90 € incl. VAT *View item ›