The Seiko 5G23-8040 is a watch model based on the 5G23 movement.
Parts List
| 290W36GN | crystal |
| 290W36GN00 | crystal |
| 35M82NS1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| FH2981B0 | case back gasket |
| 86574980 | crystal gasket - crystal gasket |
| 86179411 | bezel gasket - plastic gasket for bezel |
| G1309S | band - metal band |
| G1309S-LKS | band - link |
| G1309S-PB1 | clasp - parts for buckle/clasp |
| G1309S-BK1S | clasp - clasp |
| 12C82LSH | hand - hour hand |
| 12C82LSM | hand - minute hand |
| 5G23803LXS13 | others - dial |
| 5G238040 | others - case back |
| 5G23804061 | others - case |
| 5G239 | others - machine code |
| 82343569 | others - bezel |
| 82811680 | others - case ring |
| 0351672 | others - winding stem |
| 81601169 | others - bracelet fixing pin |
| 81180109 | others - bracelet fixing pipe |
| 0801722 | others - date dial |
| 0866559 | others - holding ring for dial |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5G23
Other models with the same movement
| 5G23-6020 |
| 5G23-8000 |
| 5G23-8010 |
| 5G23-8019 |
| 5G23-8020 |
| 5G23-8029 |
| 5G23-802A |
| 5G23-8030 |
| 5G23-8050 |
| 5G23-8059 |
| 5G23-8060 |
| 5G23-8070 |