The Seiko 7431-8000 is a watch model based on the 7431 movement.
Parts List
| 290A02JN02 | crystal - crystal |
| 290N21HN00 | crystal |
| 32N25NA1 | crown - crown |
| 0G2410B02 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| 0G2900B08 | bezel gasket - bezel gasket |
| AK27A | band - band |
| 12P01NGH | others - hour hand |
| 12P01NGM | others - minute hand |
| 1AA085A1BNG | others - hour hand |
| 3AA125F3ANG | others - second hand |
| 7431800025 | others - case |
| 83316672 | others - bezel |
| 743110 | others - machine code |
| 74318000XS14 | others - dial |
| A180BS | others - push pin |
| 0354077 | others - winding stem |
| 12SC23T1 | others - second hand |
| 2AA125A1BNG | others - minute hand |
Caliber 7431
