The Seiko 5Y23-8040 is a watch model based on the 5Y23 movement.
Parts List
| 310T48ANS0 | crystal - crystal |
| 310T48ANG0 | crystal - crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| FH2981B0 | case back gasket |
| Z1482K | band - band |
| Z1482S | band |
| Z1482L | band - band |
| Z1482C | band - metal band |
| Z1482C-LKG | band - link |
| Z1482G | band - metal band |
| Z1482G-LKG | band - link |
| Z1482K-LKG | band - link |
| Z1482L-LKG | band - link |
| Z1482J | band - band |
| Z1482G-PB1 | clasp - parts for buckle/clasp |
| Z1482G-BK1G | clasp - clasp |
| Z1482C-PB1 | clasp - parts for buckle/clasp |
| Z1482C-BK1S | clasp - clasp |
| Z1482K-BK1G | clasp - buckle |
| Z1482K-PB1 | clasp - parts for buckle |
| Z1482L-BK1S | clasp - buckle |
| Z1482L-PB1 | clasp - parts for buckle |
| 12C44KGM | hand - minute hand |
| 5Y238040 | others - case back |
| 5Y23804061 | others - case |
| 5Y23804075 | others - case |
| 5Y23804098 | others - case |
| 5Y23804LXG14 | others - dial |
| 5Y23804LXN14 | others - dial |
| 5Y23804WXB14 | others - dial |
| 5Y23804WXG14 | others - dial |
| 5Y23804WXN14 | others - dial |
| 5Y23804WXS13 | others - dial |
| 5Y23806WXB13 | others - dial |
| 5Y23824WXG14 | others - dial |
| 5Y239 | others - machine code |
| A180BS | others - push pin |
| 82800261 | others - case ring |
| 82362629 | others - decorative bezel |
| 82362621 | others - decorative bezel |
| 0351670 | others - winding stem |
| 0801722 | others - date dial |
| 0801723 | others - date dial |
| 0801734 | others - date dial |
| 0866559 | others - holding ring for dial |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 12C42KSM | others - minute hand |
| 2AB125L2BLG | others - minute hand |
| 12C42LGM | others - minute hand |
| 12C52MWM | others - minute hand |
| 12C42KSH | others - hour hand |
| 12C44KGH | others - hour hand |
| 12C42KGH | others - hour hand |
| 1AB085L0BLG | others - hour hand |
| 12C42LGH | others - hour hand |
| 12C42KGM | others - minute hand |
| 12C52MWH | others - hour hand |