The Seiko 8123-8040 is a watch model based on the 8123 movement.
Parts List
| 295W24GN00 | crystal |
| 40M78NS1 | crown - crown |
| 40M78N01 | crown |
| FH2980B0A | case back gasket - case back gasket |
| FH2980B01 | case back gasket - case back gasket |
| 86178441 | crystal gasket - plastic gasket for crystal |
| 86179411 | bezel gasket - plastic gasket for bezel |
| B1602S | band - metal band |
| B1602S-LKS | band - link |
| B1602S-PB1 | clasp - parts for buckle/clasp |
| B1602S-BK1S | clasp - clasp |
| 12C28ASH | others - hour hand |
| 12C28ASM | others - minute hand |
| 0801622 | others - date dial |
| 0884971 | others - holding ring for dial |
| 8123804061 | others - case |
| 81238080XS13 | others - dial |
| 81239 | others - machine code |
| 82340109 | others - bezel |
| A200CS | others - push pin |
| 0354765 | others - winding stem |
| 82706380 | others - case ring |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 8123
