ETA 2550 – interchangeable spare parts
ETA 2550 movement
Which spare parts fit the ETA 2550 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
🛒 Spare parts for ETA 2550 in our shop
ETA 2550 PART 415, PART 401, PART 195, PART 435, Watch Spare Parts NOS #BL25509,90 € – 15,90 € incl. VAT *View item ›
Mainplate for ETA 2550 – Part 100 – NOS24,95 € incl. VAT *View item ›
Reduction Gear for ETA 2550, Part 1481, also fits ETA 2551, 2580 – NOS15,90 € incl. VAT *View item ›
Barrel and Cover without Arbor for ETA 2550 and ETA 2551 – Part 18211,90 € incl. VAT *View item ›
Driving Gear for Ratchet Wheel for ETA 2550, 2551, 2580 – Part 1482 – NOS8,90 € – 9,90 € incl. VAT *View item ›
Setting Wheel for ETA 2540 – Part 450, also fits ETA 2541, 2550, 2580 – NOS12,90 € incl. VAT *View item ›🔧 Interchangeable parts
| Part no. | Description | Also fits |
|---|---|---|
| 161ISO 80.400 | Centre tube | |
| 182ISO 20.030 | Barrel and cover | |
| 195ISO 20.060 | Barrel arbor | |
| 203ISO 30.012 | Intermediate wheel | |
| 210ISO 30.025 | Third wheel | |
| 227ISO 30.027 | Sweep second wheel | |
| 227/3ISO 30.027.18 | Second wheel, without sweep second | |
| 242ISO 31.083 | Cannon pinion with driving wheel | |
| 242/1ISO 31.083.18 | Cannon pinion with driver, without sweep second | |
| 255ISO 31.046 | Hour wheel | |
| 260ISO 31.041 | Minute wheel | |
| 307ISO 40.301 | Regulator without pointer, assembled | |
| 307/2ISO 40.302 | Regulator without pointer, assembled | |
| 311ISO 70.800 | Upper cap jewel with end-piece, f. balance | |
| 330ISO 70.801 | Lower cap jewel with end-piece, f. balance | |
| 401ISO 51.010 | Winding stem | |
| 407ISO 31.121 | Clutch wheel | |
| 410ISO 31.120 | Winding pinion | |
| 415ISO 31.020 | Ratchet wheel | |
| 420ISO 31.023 | Crown wheel | |
| 425ISO 51.120 | Click | |
| 430ISO 61.080 | Click spring | |
| 435ISO 51.050 | Yoke | |
| 440ISO 61.100 | Yoke spring | |
| 443ISO 51.080 | Setting lever | |
| 443/5443ISO 51.080.06/.01 | Setting lever | |
| 445ISO 51.090 | Setting lever spring | |
| 450ISO 31.100 | Setting wheel | |
| 460ISO 51.055 | Crown wheel rocker | |
| 462ISO 10.062 | Minute work cock | |
| 705ISO 30.040 | Escape wheel and pinion with straight pivots | |
| 710ISO 40.010 | Jewelled pallet fork and staff | |
| 1143/1ISO 22.010.06 | Oscillating weight, assembled | |
| 1481ISO 32.031 | Reduction gear | |
| 1482ISO 32.033 | Driving gear for ratchet wheel | |
| 1488ISO 32.037 | Pawl winding wheel, compl. (with pin.) | |
| 1498ISO 32.020 | Bearing wheel for oscillating weight | |
| 1525ISO 52.122 | Bolt for reduction gear | |
| 1526ISO 52.125 | Bolt for pawl winding wheel | |
| 1530ISO 32.038 | Additional pawl winding wheel (without pinion) |
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 2550 (height × diameter × thickness × length) and matching mainspring in our shop:
📄 Technical document
View the original document for Enicar 2550 online:
🔗 Movements sharing the most parts
- ETA 2551 (58 parts)
- ETA 2550R (57 parts)
- ETA 2551R (56 parts)
- ETA 2540 (40 parts)
- ETA 2541 (39 parts)
- ETA 2580 (38 parts)
- ETA 2570 (29 parts)
- ETA 2510 (2 parts)
- ETA 2512 (2 parts)
- ETA 2365 (1 parts)
- ETA 2369 (1 parts)
- ETA 2512-1 (1 parts)
- ETA 551.111 (1 parts)
- ETA 551.121 (1 parts)
- ETA 551.411 (1 parts)
- ETA 951.101 (1 parts)
❓ Frequently asked questions
Which ETA 2550 spare parts also fit other movements?
For the ETA 2550, 40 part numbers are listed as interchangeable. Together they fit 38 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the ETA 2550?
The most shared parts: ETA 2551 (58 parts), ETA 2550R (57 parts), ETA 2551R (56 parts).
Which mainspring fits the ETA 2550?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.30 × 7.0 × 0.075 × 240 mm (GR 3194-X, automatic, with welded slipping bridle).
Can I buy spare parts for the ETA 2550?
Yes, Master Watch Parts currently has 7 matching items in stock.
🛠️ For the workshop
Red Teflon Hard Gasket For Watch Caseback Multi Size Listing Ø 16-42. Suitable for many brand watches such as Omega, Tissot, Junghans5,95 € – 7,95 € incl. VAT *View item ›
Swiss Luminova DIY Kit, Luminous Powder for Watch Hands, C1 C3 C5 Yellow Orange19,95 € – 59,90 € incl. VAT *View item ›
Replacement Sapphire Watch Crystal, Flat, 1.0 mm, Ø 15 - 45 mm22,40 € – 34,90 € incl. VAT *View item ›