EB 8503-76 – interchangeable spare parts

EB 8503-76 movement

Which spare parts fit the EB 8503-76 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

29Parts with interchange data

7Calibers 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
161ISO 80.400	Centre tube	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
181ISO 20.040	Barrel for drilled core	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
197ISO 20.070.06	Core and ratchet wheel, riveted	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
199ISO 20.062	Barrel axle	EB 8501 2e EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
203ISO 30.012	Intermediate wheel and pinion	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
210ISO 30.025	Third wheel	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
227ISO 30.027	Sweep second wheel	EB 8501-76 EB 8511-76 EB 8513-76 Height 678 EB 8501-76 EB 8511-76 EB 8513-76
243ISO 31.081	Cannon pinion without clam notch	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76 Height 230 EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
255ISO 31.046	Hour wheel	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76 Height 150 EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
260ISO 31.041	Minute wheel	EB 8501 2e EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
301ISO 40.301	Regulator for flat hairspring	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
401ISO 51.010	Winding stem	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
420ISO 31.023	Crown wheel	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
423ISO 81.136	Crown wheel core	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
425ISO 51.120	Click	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
430ISO 61.080	Click spring	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
450ISO 31.100	Setting wheel	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
453ISO 31.101	Intermediate setting wheel	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
543ISO 81.276		EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
790ISO 30.041	Pin escape wheel, pivoted	EB 8501-76 EB 8511-76 EB 8513-76
792ISO 40.101.41	Balance staff for roller	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
793ISO 40.054	Balance with roller, regulated	EB 8501-76 EB 8511-76 EB 8513-76 EB 8501-76 EB 8511-76 EB 8513-76
799 = 799 DancISO 40.120		EB 8501 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
799/4ISO 40.123	Small roller	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
821/792ISO 40.101.26	Balance staff for roller and for shock-protecting device	EB 8501 EB 8501-76 EB 8503 EB 8511 EB 8511-76 EB 8513 EB 8513-76
2542ISO 33.060	Date setting wheel	EB 8503 EB 8513 EB 8513-76
2556ISO 33.020	Date indicator driving wheel	EB 8503 EB 8513 EB 8513-76
2557/1ISO 91.440	Date indicator, transferred	EB 8503 EB 8513 EB 8513-76
2576ISO 53.080	Date jumper, mounted	EB 8503 EB 8513 EB 8513-76

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.

🔗 Movements sharing the most parts

→ All calibers of EB

❓ Frequently asked questions

Which EB 8503-76 spare parts also fit other movements?

For the EB 8503-76, 29 part numbers are listed as interchangeable. Together they fit 7 other calibers – the table below shows which part fits which movement.