Which part did you mean?
Sometimes different manufacturers use similar part numbers.
Which one of those listed below did you mean?| Cummins Marine (203131) CUM203131 - NUT,HEAVY HEXAGON |
| MIN (203131) MIN203131 - ->2011385 SCREW,TENSION |
| Evinrude / Johnson / OMC (0203131) 317372 0203131 |