The Seiko Y143-5A40 is a watch model based on the Y143 movement.
Parts List
| 272W01LN01 | crystal |
| 45E81NS1 | crown |
| 45E81NN1 | crown |
| 0F180BA13 | case back gasket |
| 0H310BA11 | case back gasket |
| 86575690 | crystal gasket |
| 86575695 | crystal gasket |
| 3AA125F1A6S | others - second hand |
| 3AA125F1ANG | others - second hand |
| 0354866 | others - winding stem |
| 11SC17T1 | others - second hand |
| 11SC17T2 | others - second hand |
| 11C72LSM | others - minute hand |
| 11C72LSH | others - hour hand |
| 11C72LGM | others - minute hand |
| 11C72LGH | others - hour hand |