EB 8423-73 – interchangeable spare parts

EB 8423-73 movement

Which spare parts fit the EB 8423-73 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

35Parts with interchange data

62Calibers 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.

🛒 Spare parts for EB 8423-73 in our shop

Fourth Wheel and Pinion, Two Long Pivots, for EB 8423, 8423-73, 8423-74 – Part 225 – NOS14,90 € incl. VAT *View item ›

Coupling Clutch, mounted, PART 8080 for Ebauches Bettlach EB 8423, EB 8423-73, EB 8429-73 – NOS14,90 € incl. VAT *View item ›

Minute Recording Runner for Bettlach EB 8423 / 8423-73 – Part 8026 – NOS16,90 € incl. VAT *View item ›

🔧 Interchangeable parts

Part no.	Description	Also fits
163/1ISO 80.400	Center pipe	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
181/1ISO 20.040.06	Barrel for drilled core with driving wheel / driving pinion	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
197ISO 20.070.06	Core and ratchet wheel, riveted	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
199ISO 20.062	Barrel axle	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
203ISO 30.012	Intermediate wheel and pinion	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
210ISO 30.025	Third wheel	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
225ISO 30.028	Fourth wheel and pinion, two long pivots	EB 8423 EB 8423-74 Height 560 EB 8423 EB 8423-74 Height 583 EB 8423 EB 8423-74
243ISO 31.081	Cannon pinion without clam notch	EB 8423 EB 8423-74 Height 245 EB 8423 EB 8423-74
250ISO 31.046	Hour wheel	EB 8423 EB 8423-74 Height 153 EB 8423 EB 8423-74
260ISO 31.041	Minute wheel	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
307ISO 40.301	Regulator with adjustable stud holder, for flat hairspring	EB 8423-74 EB 8429-73 EB 8429-74 EB 8460-73 EB 8460-74 EB 8461-73 EB 8461-74 EB 8462-73 EB 8462-74 EB 8463-73 EB 8463-74 EB 8465-73 EB 8465-74 EB 8467-73 EB 8467-74 EB 8480-73 EB 8480-74 EB 8481-73 EB 8481-74 EB 8482-73 EB 8482-74 EB 8483-73 EB 8483-74 EB 8485-73 EB 8485-74 EB 8487-73 EB 8487-74 EB 8490-73 EB 8490-74 EB 8491-73 EB 8491-74 EB 8492-73 EB 8492-74 EB 8493-73 EB 8493-74 EB 8495-73 EB 8495-74 EB 8497-73 EB 8497-74
407ISO 31.121	Clutch wheel	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
410ISO 31.120	Winding pinion	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
420ISO 31.023	Crown wheel	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
434ISO 51.120	Clicking spring	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
435/1ISO 51.050	Spring yoke	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
443/1ISO 51.080.06	Setting lever, assembled	EB 8423 EB 8429 EB 8429-73 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8461 EB 8461-73 EB 8462 EB 8462-73 EB 8463 EB 8463-73 EB 8464 EB 8465 EB 8465-73 EB 8467 EB 8467-73 EB 8480 EB 8480-73 EB 8481 EB 8481-73 EB 8482 EB 8482-73 EB 8483 EB 8483-73 EB 8485 EB 8485-73 EB 8487 EB 8487-73 EB 8490 EB 8490-73 EB 8491 EB 8491-73 EB 8492 EB 8492-73 EB 8493 EB 8493-73 EB 8495 EB 8495-73 EB 8497 EB 8497-73
450ISO 31.100	Setting wheel	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
790ISO 30.041	Pin escape wheel, pivoted	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8430 EB 8431 EB 8460 EB 8460-73 EB 8460-74 EB 8461 EB 8461-73 EB 8461-74 EB 8462 EB 8462-73 EB 8462-74 EB 8463 EB 8463-73 EB 8463-74 EB 8464 EB 8465 EB 8465-73 EB 8465-74 EB 8467 EB 8467-73 EB 8467-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
792ISO 40.101.41	Balance staff for roller	EB 8423-74 EB 8429-73 EB 8429-74 EB 8460-73 EB 8460-74 EB 8461-73 EB 8461-74 EB 8462-73 EB 8462-74 EB 8463-73 EB 8463-74 EB 8465-73 EB 8465-74 EB 8467-73 EB 8467-74 EB 8480-73 EB 8480-74 EB 8481-73 EB 8481-74 EB 8482-73 EB 8482-74 EB 8483-73 EB 8483-74 EB 8485-73 EB 8485-74 EB 8487-73 EB 8487-74 EB 8490-73 EB 8490-74 EB 8491-73 EB 8491-74 EB 8492-73 EB 8492-74 EB 8493-73 EB 8493-74 EB 8495-73 EB 8495-74 EB 8497-73 EB 8497-74
793ISO 40.054	Balance with roller, regulated	EB 8423-74 EB 8429-73 EB 8429-74 EB 8423-74 EB 8429-73 EB 8429-74
794ISO 40.055	Balance with finger, regulated	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8481
797	Pin pallet fork for roller	according to original label EB 8423 EB 8429-73 EB 8480 EB 8480-73 EB 8481 EB 8481-73 EB 8482 EB 8482-73 EB 8483 EB 8483-73 EB 8485 EB 8485-73 EB 8487 EB 8487-73 EB 8490 EB 8490-73 EB 8491 EB 8491-73 EB 8492 EB 8492-73 EB 8493 EB 8493-73 EB 8495 EB 8495-73 EB 8497 EB 8497-73
799 = 799 DancISO 40.120		EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74 EB 8480 EB 8480-73 EB 8480-74 EB 8481 EB 8481-73 EB 8481-74 EB 8482 EB 8482-73 EB 8482-74 EB 8483 EB 8483-73 EB 8483-74 EB 8485 EB 8485-73 EB 8485-74 EB 8487 EB 8487-73 EB 8487-74 EB 8490 EB 8490-73 EB 8490-74 EB 8491 EB 8491-73 EB 8491-74 EB 8492 EB 8492-73 EB 8492-74 EB 8493 EB 8493-73 EB 8493-74 EB 8495 EB 8495-73 EB 8495-74 EB 8497 EB 8497-73 EB 8497-74
821/792ISO 40.101.26	Balance staff for roller and for shock-protecting device	EB 8423-74 EB 8429-73 EB 8429-74 EB 8460-73 EB 8460-74 EB 8461-73 EB 8461-74 EB 8462-73 EB 8462-74 EB 8463-73 EB 8463-74 EB 8465-73 EB 8465-74 EB 8467-73 EB 8467-74 EB 8480-73 EB 8480-74 EB 8481-73 EB 8481-74 EB 8482-73 EB 8482-74 EB 8483-73 EB 8483-74 EB 8485-73 EB 8485-74 EB 8487-73 EB 8487-74 EB 8490-73 EB 8490-74 EB 8491-73 EB 8491-74 EB 8492-73 EB 8492-74 EB 8493-73 EB 8493-74 EB 8495-73 EB 8495-74 EB 8497-73 EB 8497-74
8000ISO 35.010	Chronograph runner, mounted	EB 8423 EB 8423-74 Height 813 EB 8423 EB 8423-74
8026ISO 35.012.24		EB 8423 EB 8423-74 Height 663 EB 8423 EB 8423-74
8060ISO 35.060	Driving wheel	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
8061ISO 35.061		EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
8080ISO 55.220	Coupling clutch, mounted	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
8219ISO 55.241	Hammer	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
8231ISO 55.323		EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
8235ISO 55.047		EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
8290ISO 65.440	Friction spring	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74
8320ISO 65.160 = 8335 (65.041	Coupling clutch spring	EB 8423 EB 8423-74 EB 8429 EB 8429-73 EB 8429-74

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

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❓ Frequently asked questions

Which EB 8423-73 spare parts also fit other movements?

For the EB 8423-73, 35 part numbers are listed as interchangeable. Together they fit 62 other calibers – the table below shows which part fits which movement.