The Seiko 5P31-8000 is a watch model based on the 5P31 movement.
Parts List
| 290W89HN01 | crystal - crystal |
| 35M17NS1 | crown |
| 35M27NA1 | crown |
| 0F240BAA3 | case back gasket - case back gasket |
| AK13D | band - band |
| LK58E | band - band |
| AK18D | band - band |
| AL15B | band - band |
| AK42D | band - band |
| AL35B | band - band |
| PX1BM | band - band |
| AL16B | band - leather band |
| 13SC09TG | others - second hand |
| 1BA085A1BAF | others - hour hand |
| 2BA120A1BAF | others - minute hand |
| 2BA125A1BAA | others - minute hand |
| 2BA125A1BAF | others - minute hand |
| 2BA120A1BNG | others - minute hand |
| 1BA085A1BAA | others - hour hand |
| 3AA125F1ANG | others - second hand |
| 3AA125F3A6S | others - second hand |
| 3AA125F3ANG | others - second hand |
| 12T31A1H | others - hour hand |
| 12T31A1M | others - minute hand |
| 12T43CGH | others - hour hand |
| 12T43CGM | others - minute hand |
| 13SC09T1 | others - second hand |
| 5P3161 | others - machine code |
| 5P3180007E | others - case |
| 5P318000XG14 | others - dial |
| 5P318000XS13 | others - dial |
| 5P318010XS19 | others - dial |
| 5P318030XS19 | others - dial |
| 5P318040XS19 | others - dial |
| 5P318050XS14 | others - dial |
| 5P318060XS19 | others - dial |
| 5P318080XS19 | others - dial |
| 5P318090XS19 | others - dial |
| 5P318100XS14 | others - dial |
| A170BS | others - push pin |
| EB0055B01 | others - crown and stem gasket |
| 0351671 | others - winding stem |
| 5P31800075 | others - case |
| 82810490 | others - case ring |
| 5P318000 | others - case back |
| 3AA125F3AN2 | others - second hand |
| 12T31A2H | others - hour hand |
| 12T31A2M | others - minute hand |
| 12T31AGH | others - hour hand |
| 12T31AGM | others - minute hand |
| 13SC09T2 | others - second hand |
| 1BA080A1BNG | others - hour hand |
| 1BA085A1BAH | others - hour hand |
| 2BA125A1BAH | others - minute hand |