The Seiko 5G23-8020 is a watch model based on the 5G23 movement.
Parts List
| 290W40FN | crystal |
| 290W40FN01 | crystal |
| 45EA2NA1 | crown |
| FH2980B0 | case back gasket |
| 0Z3214B0 | case back gasket - bezel gasket |
| FH2980B0A | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| G1310C | band - metal band |
| G1310C-LKG | band - link |
| G1310H | band - metal band |
| G1310H-LKG | band - link |
| G1310H-PB1 | clasp - parts for buckle/clasp |
| G1310H-BK1G | clasp - clasp |
| G1310C-PB1 | clasp - parts for buckle/clasp |
| G1310C-BK1S | clasp - clasp |
| 0351672 | others - winding stem |
| 0Z3214B02 | others - rotating bezel gasket |
| 0801729 | others - date dial |
| 0866561 | others - holding ring for dial |
| 5G23801LXG14 | others - dial |
| 5G238020 | others - case back |
| 5G23802098 | others - case |
| 5G238020XF | others - case |
| 5G23802LXN14 | others - dial |
| 5G239 | others - machine code |
| 81350180 | others - click spring |
| 82811680 | others - case ring |
| 84314881 | others - dial ring |
| 84314885 | others - dial ring |
| 86311143 | others - rotating bezel |
| 86311145 | others - rotating bezel |
| 89999903 | others - click ball |
| A180CS | others - push pin |
| 0A0150B0A | others - crown and stem gasket |
| 13SC06LA | others - second hand |
| 2AA120S0BLG | others - minute hand |
| 89995390 | others - pusher spacer |
| 12C60LGM | others - minute hand |
| 1AA080S0BLG | others - hour hand |
| 2AB120L0BLG | others - minute hand |
| 12C60LGH | others - hour hand |
| 12CA0LGM | others - minute hand |
| 1AB080L0BLG | others - hour hand |
| 12CA0LGH | others - hour hand |
Caliber 5G23
Other models with the same movement
| 5G23-6020 |
| 5G23-8000 |
| 5G23-8010 |
| 5G23-8019 |
| 5G23-8029 |
| 5G23-802A |
| 5G23-8030 |
| 5G23-8040 |
| 5G23-8050 |
| 5G23-8059 |
| 5G23-8060 |
| 5G23-8070 |